You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@commons.apache.org by gg...@apache.org on 2020/09/21 02:40:27 UTC

[commons-net] 02/03: Rename most private names to remove __prefix, _prefix and postfix_ underscores. Protected names are untouched. Make some package private variables private.

This is an automated email from the ASF dual-hosted git repository.

ggregory pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/commons-net.git

commit e70463ef9494b4c170a27e61b847dca44979be5e
Author: Gary Gregory <ga...@gmail.com>
AuthorDate: Sun Sep 20 22:39:59 2020 -0400

    Rename most private names to remove __prefix, _prefix and postfix_
    underscores. Protected names are untouched. Make some package private
    variables private.
---
 .../apache/commons/net/DatagramSocketClient.java   |  6 +-
 .../java/org/apache/commons/net/SocketClient.java  | 12 +--
 .../commons/net/chargen/CharGenUDPClient.java      | 24 +++---
 .../commons/net/discard/DiscardUDPClient.java      |  2 +-
 .../commons/net/examples/nntp/ExtendedNNTPOps.java |  2 +-
 .../net/examples/telnet/TelnetClientExample.java   |  2 +-
 .../apache/commons/net/finger/FingerClient.java    |  4 +-
 .../java/org/apache/commons/net/ftp/FTPClient.java | 68 +++++++--------
 .../java/org/apache/commons/net/ftp/FTPFile.java   | 98 +++++++++++-----------
 .../org/apache/commons/net/ftp/FTPSCommand.java    |  4 +-
 .../commons/net/imap/AuthenticatingIMAPClient.java |  4 +-
 .../java/org/apache/commons/net/imap/IMAP.java     | 46 +++++-----
 .../apache/commons/net/nntp/ArticleIterator.java   |  2 +-
 .../java/org/apache/commons/net/nntp/NNTP.java     | 40 ++++-----
 .../org/apache/commons/net/nntp/NNTPClient.java    | 40 ++++-----
 .../org/apache/commons/net/nntp/NNTPCommand.java   |  4 +-
 .../org/apache/commons/net/nntp/NewsgroupInfo.java | 10 +--
 .../apache/commons/net/nntp/NewsgroupIterator.java |  2 +-
 .../commons/net/smtp/AuthenticatingSMTPClient.java |  4 +-
 .../org/apache/commons/net/smtp/RelayPath.java     |  4 +-
 .../java/org/apache/commons/net/telnet/Telnet.java |  2 +-
 .../apache/commons/net/telnet/TelnetCommand.java   | 10 +--
 .../net/telnet/WindowSizeOptionHandler.java        | 22 ++---
 .../org/apache/commons/net/tftp/TFTPAckPacket.java | 26 +++---
 .../org/apache/commons/net/tftp/TFTPClient.java    | 18 ++--
 .../apache/commons/net/tftp/TFTPDataPacket.java    | 12 +--
 .../apache/commons/net/tftp/TFTPErrorPacket.java   | 10 +--
 .../org/apache/commons/net/tftp/TFTPPacket.java    | 18 ++--
 .../apache/commons/net/tftp/TFTPRequestPacket.java |  6 +-
 .../apache/commons/net/tftp/TFTPServerMain.java    |  4 +-
 30 files changed, 253 insertions(+), 253 deletions(-)

diff --git a/src/main/java/org/apache/commons/net/DatagramSocketClient.java b/src/main/java/org/apache/commons/net/DatagramSocketClient.java
index a39a80b..819c74c 100644
--- a/src/main/java/org/apache/commons/net/DatagramSocketClient.java
+++ b/src/main/java/org/apache/commons/net/DatagramSocketClient.java
@@ -53,7 +53,7 @@ public abstract class DatagramSocketClient
      * The default DatagramSocketFactory shared by all DatagramSocketClient
      * instances.
      ***/
-    private static final DatagramSocketFactory __DEFAULT_SOCKET_FACTORY =
+    private static final DatagramSocketFactory DEFAULT_SOCKET_FACTORY =
         new DefaultDatagramSocketFactory();
 
     /**
@@ -84,7 +84,7 @@ public abstract class DatagramSocketClient
         _socket_ = null;
         _timeout_ = 0;
         _isOpen_ = false;
-        _socketFactory_ = __DEFAULT_SOCKET_FACTORY;
+        _socketFactory_ = DEFAULT_SOCKET_FACTORY;
     }
 
 
@@ -275,7 +275,7 @@ public abstract class DatagramSocketClient
     public void setDatagramSocketFactory(final DatagramSocketFactory factory)
     {
         if (factory == null) {
-            _socketFactory_ = __DEFAULT_SOCKET_FACTORY;
+            _socketFactory_ = DEFAULT_SOCKET_FACTORY;
         } else {
             _socketFactory_ = factory;
         }
diff --git a/src/main/java/org/apache/commons/net/SocketClient.java b/src/main/java/org/apache/commons/net/SocketClient.java
index 90ff247..2be0134 100644
--- a/src/main/java/org/apache/commons/net/SocketClient.java
+++ b/src/main/java/org/apache/commons/net/SocketClient.java
@@ -61,11 +61,11 @@ public abstract class SocketClient
     public static final String NETASCII_EOL = "\r\n";
 
     /** The default SocketFactory shared by all SocketClient instances. */
-    private static final SocketFactory __DEFAULT_SOCKET_FACTORY =
+    private static final SocketFactory DEFAULT_SOCKET_FACTORY =
             SocketFactory.getDefault();
 
     /** The default {@link ServerSocketFactory} */
-    private static final ServerSocketFactory __DEFAULT_SERVER_SOCKET_FACTORY =
+    private static final ServerSocketFactory DEFAULT_SERVER_SOCKET_FACTORY =
             ServerSocketFactory.getDefault();
 
     /**
@@ -131,8 +131,8 @@ public abstract class SocketClient
         _output_ = null;
         _timeout_ = 0;
         _defaultPort_ = 0;
-        _socketFactory_ = __DEFAULT_SOCKET_FACTORY;
-        _serverSocketFactory_ = __DEFAULT_SERVER_SOCKET_FACTORY;
+        _socketFactory_ = DEFAULT_SOCKET_FACTORY;
+        _serverSocketFactory_ = DEFAULT_SERVER_SOCKET_FACTORY;
     }
 
 
@@ -704,7 +704,7 @@ public abstract class SocketClient
     public void setSocketFactory(final SocketFactory factory)
     {
         if (factory == null) {
-            _socketFactory_ = __DEFAULT_SOCKET_FACTORY;
+            _socketFactory_ = DEFAULT_SOCKET_FACTORY;
         } else {
             _socketFactory_ = factory;
         }
@@ -725,7 +725,7 @@ public abstract class SocketClient
      */
     public void setServerSocketFactory(final ServerSocketFactory factory) {
         if (factory == null) {
-            _serverSocketFactory_ = __DEFAULT_SERVER_SOCKET_FACTORY;
+            _serverSocketFactory_ = DEFAULT_SERVER_SOCKET_FACTORY;
         } else {
             _serverSocketFactory_ = factory;
         }
diff --git a/src/main/java/org/apache/commons/net/chargen/CharGenUDPClient.java b/src/main/java/org/apache/commons/net/chargen/CharGenUDPClient.java
index a503eb7..ad9e632 100644
--- a/src/main/java/org/apache/commons/net/chargen/CharGenUDPClient.java
+++ b/src/main/java/org/apache/commons/net/chargen/CharGenUDPClient.java
@@ -62,9 +62,9 @@ public final class CharGenUDPClient extends DatagramSocketClient
     /*** The default chargen port.  It is set to 19 according to RFC 864. ***/
     public static final int DEFAULT_PORT = 19;
 
-    private final byte[] __receiveData;
-    private final DatagramPacket __receivePacket;
-    private final DatagramPacket __sendPacket;
+    private final byte[] receiveData;
+    private final DatagramPacket receivePacket;
+    private final DatagramPacket sendPacket;
 
     /***
      * The default CharGenUDPClient constructor.  It initializes some internal
@@ -74,9 +74,9 @@ public final class CharGenUDPClient extends DatagramSocketClient
     public CharGenUDPClient()
     {
         // CharGen return packets have a maximum length of 512
-        __receiveData = new byte[512];
-        __receivePacket = new DatagramPacket(__receiveData, __receiveData.length);
-        __sendPacket = new DatagramPacket(new byte[0], 0);
+        receiveData = new byte[512];
+        receivePacket = new DatagramPacket(receiveData, receiveData.length);
+        sendPacket = new DatagramPacket(new byte[0], 0);
     }
 
 
@@ -91,9 +91,9 @@ public final class CharGenUDPClient extends DatagramSocketClient
      ***/
     public void send(final InetAddress host, final int port) throws IOException
     {
-        __sendPacket.setAddress(host);
-        __sendPacket.setPort(port);
-        _socket_.send(__sendPacket);
+        sendPacket.setAddress(host);
+        sendPacket.setPort(port);
+        _socket_.send(sendPacket);
     }
 
     /*** Same as <code>send(host, CharGenUDPClient.DEFAULT_PORT);</code>
@@ -118,10 +118,10 @@ public final class CharGenUDPClient extends DatagramSocketClient
         int length;
         byte[] result;
 
-        _socket_.receive(__receivePacket);
+        _socket_.receive(receivePacket);
 
-        result = new byte[length = __receivePacket.getLength()];
-        System.arraycopy(__receiveData, 0, result, 0, length);
+        result = new byte[length = receivePacket.getLength()];
+        System.arraycopy(receiveData, 0, result, 0, length);
 
         return result;
     }
diff --git a/src/main/java/org/apache/commons/net/discard/DiscardUDPClient.java b/src/main/java/org/apache/commons/net/discard/DiscardUDPClient.java
index 2fff6da..69f15b8 100644
--- a/src/main/java/org/apache/commons/net/discard/DiscardUDPClient.java
+++ b/src/main/java/org/apache/commons/net/discard/DiscardUDPClient.java
@@ -41,7 +41,7 @@ public class DiscardUDPClient extends DatagramSocketClient
     /*** The default discard port.  It is set to 9 according to RFC 863. ***/
     public static final int DEFAULT_PORT = 9;
 
-    DatagramPacket sendPacket;
+    private DatagramPacket sendPacket;
 
     public DiscardUDPClient()
     {
diff --git a/src/main/java/org/apache/commons/net/examples/nntp/ExtendedNNTPOps.java b/src/main/java/org/apache/commons/net/examples/nntp/ExtendedNNTPOps.java
index d0aa919..c97a4cf 100644
--- a/src/main/java/org/apache/commons/net/examples/nntp/ExtendedNNTPOps.java
+++ b/src/main/java/org/apache/commons/net/examples/nntp/ExtendedNNTPOps.java
@@ -32,7 +32,7 @@ import org.apache.commons.net.nntp.NewsgroupInfo;
 public class ExtendedNNTPOps {
 
 
-    NNTPClient client;
+    private NNTPClient client;
 
     public ExtendedNNTPOps() {
         client = new NNTPClient();
diff --git a/src/main/java/org/apache/commons/net/examples/telnet/TelnetClientExample.java b/src/main/java/org/apache/commons/net/examples/telnet/TelnetClientExample.java
index 365e9a5..9f368bd 100644
--- a/src/main/java/org/apache/commons/net/examples/telnet/TelnetClientExample.java
+++ b/src/main/java/org/apache/commons/net/examples/telnet/TelnetClientExample.java
@@ -47,7 +47,7 @@ import org.apache.commons.net.telnet.InvalidTelnetOptionException;
  ***/
 public class TelnetClientExample implements Runnable, TelnetNotificationHandler
 {
-    static TelnetClient tc = null;
+    private static TelnetClient tc = null;
 
     /***
      * Main for the TelnetClientExample.
diff --git a/src/main/java/org/apache/commons/net/finger/FingerClient.java b/src/main/java/org/apache/commons/net/finger/FingerClient.java
index 0d1aca1..b63dcc1 100644
--- a/src/main/java/org/apache/commons/net/finger/FingerClient.java
+++ b/src/main/java/org/apache/commons/net/finger/FingerClient.java
@@ -57,7 +57,7 @@ public class FingerClient extends SocketClient
      ***/
     public static final int DEFAULT_PORT = 79;
 
-    private static final String __LONG_FLAG = "/W ";
+    private static final String LONG_FLAG = "/W ";
 
     private transient char[] buffer = new char[1024];
 
@@ -154,7 +154,7 @@ public class FingerClient extends SocketClient
         DataOutputStream output;
         final StringBuilder buffer = new StringBuilder(64);
         if (longOutput) {
-            buffer.append(__LONG_FLAG);
+            buffer.append(LONG_FLAG);
         }
         buffer.append(username);
         buffer.append(SocketClient.NETASCII_EOL);
diff --git a/src/main/java/org/apache/commons/net/ftp/FTPClient.java b/src/main/java/org/apache/commons/net/ftp/FTPClient.java
index 3fe9e17..cb1def0 100644
--- a/src/main/java/org/apache/commons/net/ftp/FTPClient.java
+++ b/src/main/java/org/apache/commons/net/ftp/FTPClient.java
@@ -359,7 +359,7 @@ implements Configurable
     private int dataConnectionMode;
     private int dataTimeout;
     private int passivePort;
-    private String __passiveHost;
+    private String passiveHost;
     private final Random random;
     private int activeMinPort;
     private int activeMaxPort;
@@ -368,7 +368,7 @@ implements Configurable
     /** The address to bind to on passive connections, if necessary. */
     private InetAddress passiveLocalHost;
 
-    private int __fileType;
+    private int fileType;
     @SuppressWarnings("unused") // fields are written, but currently not read
     private int fileFormat;
     @SuppressWarnings("unused") // field is written, but currently not read
@@ -377,7 +377,7 @@ implements Configurable
     private int fileTransferMode;
     private boolean remoteVerificationEnabled;
     private long restartOffset;
-    private FTPFileEntryParserFactory __parserFactory;
+    private FTPFileEntryParserFactory parserFactory;
     private int bufferSize; // buffersize for buffered data streams
     private int sendDataSocketBufferSize;
     private int receiveDataSocketBufferSize;
@@ -417,10 +417,10 @@ implements Configurable
     private HostnameResolver passiveNatWorkaroundStrategy = new NatServerResolverImpl(this);
 
     /** Pattern for PASV mode responses. Groups: (n,n,n,n),(n),(n) */
-    private static final java.util.regex.Pattern __PARMS_PAT;
+    private static final java.util.regex.Pattern PARMS_PAT;
 
     static {
-        __PARMS_PAT = java.util.regex.Pattern.compile(
+        PARMS_PAT = java.util.regex.Pattern.compile(
                 "(\\d{1,3},\\d{1,3},\\d{1,3},\\d{1,3}),(\\d{1,3}),(\\d{1,3})");
     }
 
@@ -482,7 +482,7 @@ implements Configurable
         initDefaults();
         dataTimeout = -1;
         remoteVerificationEnabled = true;
-        __parserFactory = new DefaultFTPFileEntryParserFactory();
+        parserFactory = new DefaultFTPFileEntryParserFactory();
         configuration      = null;
         listHiddenFiles = false;
         useEPSVwithIPv4 = false;
@@ -494,13 +494,13 @@ implements Configurable
     private void initDefaults()
     {
         dataConnectionMode = ACTIVE_LOCAL_DATA_CONNECTION_MODE;
-        __passiveHost        = null;
+        passiveHost        = null;
         passivePort        = -1;
         activeExternalHost = null;
         reportActiveExternalHost = null;
         activeMinPort = 0;
         activeMaxPort = 0;
-        __fileType           = FTP.ASCII_FILE_TYPE;
+        fileType           = FTP.ASCII_FILE_TYPE;
         fileStructure      = FTP.FILE_STRUCTURE;
         fileFormat         = FTP.NON_PRINT_TEXT_FORMAT;
         fileTransferMode   = FTP.STREAM_TRANSFER_MODE;
@@ -568,13 +568,13 @@ implements Configurable
     protected void _parsePassiveModeReply(final String reply)
     throws MalformedServerReplyException
     {
-        final java.util.regex.Matcher m = __PARMS_PAT.matcher(reply);
+        final java.util.regex.Matcher m = PARMS_PAT.matcher(reply);
         if (!m.find()) {
             throw new MalformedServerReplyException(
                     "Could not parse passive host information.\nServer Reply: " + reply);
         }
 
-        __passiveHost = "0,0,0,0".equals(m.group(1)) ? _socket_.getInetAddress().getHostAddress() :
+        this.passiveHost = "0,0,0,0".equals(m.group(1)) ? _socket_.getInetAddress().getHostAddress() :
                 m.group(1).replace(',', '.'); // Fix up to look like IP address
 
         try
@@ -591,11 +591,11 @@ implements Configurable
 
         if (passiveNatWorkaroundStrategy != null) {
             try {
-                final String passiveHost = passiveNatWorkaroundStrategy.resolve(__passiveHost);
-                if (!__passiveHost.equals(passiveHost)) {
+                final String newPassiveHost = passiveNatWorkaroundStrategy.resolve(this.passiveHost);
+                if (!this.passiveHost.equals(newPassiveHost)) {
                     fireReplyReceived(0,
-                            "[Replacing PASV mode reply address "+__passiveHost+" with "+passiveHost+"]\n");
-                    __passiveHost = passiveHost;
+                            "[Replacing PASV mode reply address "+this.passiveHost+" with "+newPassiveHost+"]\n");
+                    this.passiveHost = newPassiveHost;
                 }
             } catch (final UnknownHostException e) { // Should not happen as we are passing in an IP address
                 throw new MalformedServerReplyException(
@@ -635,8 +635,8 @@ implements Configurable
 
 
         // in EPSV mode, the passive host address is implicit
-        __passiveHost = getRemoteAddress().getHostAddress();
-        passivePort = port;
+        this.passiveHost = getRemoteAddress().getHostAddress();
+        this.passivePort = port;
     }
 
     private boolean storeFile(final FTPCmd command, final String remote, final InputStream local)
@@ -665,7 +665,7 @@ implements Configurable
 
         final OutputStream output;
 
-        if (__fileType == ASCII_FILE_TYPE) {
+        if (fileType == ASCII_FILE_TYPE) {
             output = new ToNetASCIIOutputStream(getBufferedOutputStream(socket.getOutputStream()));
         } else {
             output = getBufferedOutputStream(socket.getOutputStream());
@@ -723,7 +723,7 @@ implements Configurable
         }
 
         final OutputStream output;
-        if (__fileType == ASCII_FILE_TYPE) {
+        if (fileType == ASCII_FILE_TYPE) {
             // We buffer ascii transfers because the buffering has to
             // be interposed between ToNetASCIIOutputSream and the underlying
             // socket output stream.  We don't buffer binary transfers
@@ -918,7 +918,7 @@ implements Configurable
                 socket.setSoTimeout(dataTimeout);
             }
 
-            socket.connect(new InetSocketAddress(__passiveHost, passivePort), connectTimeout);
+            socket.connect(new InetSocketAddress(passiveHost, passivePort), connectTimeout);
             if ((restartOffset > 0) && !restart(restartOffset))
             {
                 socket.close();
@@ -1013,7 +1013,7 @@ implements Configurable
      * @see org.apache.commons.net.ftp.parser.DefaultFTPFileEntryParserFactory
      */
     public void setParserFactory(final FTPFileEntryParserFactory parserFactory) {
-        __parserFactory = parserFactory;
+        this.parserFactory = parserFactory;
     }
 
 
@@ -1252,7 +1252,7 @@ implements Configurable
     public void enterLocalActiveMode()
     {
         dataConnectionMode = ACTIVE_LOCAL_DATA_CONNECTION_MODE;
-        __passiveHost = null;
+        passiveHost = null;
         passivePort = -1;
     }
 
@@ -1277,7 +1277,7 @@ implements Configurable
         dataConnectionMode = PASSIVE_LOCAL_DATA_CONNECTION_MODE;
         // These will be set when just before a data connection is opened
         // in _openDataConnection_()
-        __passiveHost = null;
+        passiveHost = null;
         passivePort = -1;
     }
 
@@ -1312,7 +1312,7 @@ implements Configurable
         if (FTPReply.isPositiveCompletion(port(host, port)))
         {
             dataConnectionMode = ACTIVE_REMOTE_DATA_CONNECTION_MODE;
-            __passiveHost = null;
+            passiveHost = null;
             passivePort = -1;
             return true;
         }
@@ -1367,7 +1367,7 @@ implements Configurable
      */
     public String getPassiveHost()
     {
-        return __passiveHost;
+        return passiveHost;
     }
 
     /**
@@ -1555,8 +1555,8 @@ implements Configurable
     {
         if (FTPReply.isPositiveCompletion(type(fileType)))
         {
-            __fileType = fileType;
-            fileFormat = FTP.NON_PRINT_TEXT_FORMAT;
+            this.fileType = fileType;
+            this.fileFormat = FTP.NON_PRINT_TEXT_FORMAT;
             return true;
         }
         return false;
@@ -1604,8 +1604,8 @@ implements Configurable
     {
         if (FTPReply.isPositiveCompletion(type(fileType, formatOrByteSize)))
         {
-            __fileType = fileType;
-            fileFormat = formatOrByteSize;
+            this.fileType = fileType;
+            this.fileFormat = formatOrByteSize;
             return true;
         }
         return false;
@@ -1900,7 +1900,7 @@ implements Configurable
         }
 
         final InputStream input;
-        if (__fileType == ASCII_FILE_TYPE) {
+        if (fileType == ASCII_FILE_TYPE) {
             input = new FromNetASCIIInputStream(getBufferedInputStream(socket.getInputStream()));
         } else {
             input = getBufferedInputStream(socket.getInputStream());
@@ -1980,7 +1980,7 @@ implements Configurable
         }
 
         final InputStream input;
-        if (__fileType == ASCII_FILE_TYPE) {
+        if (fileType == ASCII_FILE_TYPE) {
             // We buffer ascii transfers because the buffering has to
             // be interposed between FromNetASCIIOutputSream and the underlying
             // socket input stream.  We don't buffer binary transfers
@@ -3381,7 +3381,7 @@ implements Configurable
                 // if a parser key was supplied in the parameters,
                 // use that to create the parser
                 entryParser =
-                    __parserFactory.createFileEntryParser(parserKey);
+                    parserFactory.createFileEntryParser(parserKey);
                 entryParserKey = parserKey;
 
             } else {
@@ -3389,7 +3389,7 @@ implements Configurable
                 // in the params, and if it has a non-empty system type, use that.
                 if (null != configuration && configuration.getServerSystemKey().length() > 0) {
                     entryParser =
-                        __parserFactory.createFileEntryParser(configuration);
+                        parserFactory.createFileEntryParser(configuration);
                     entryParserKey = configuration.getServerSystemKey();
                 } else {
                     // if a parserKey hasn't been supplied, and a configuration
@@ -3408,9 +3408,9 @@ implements Configurable
                         }
                     }
                     if (null != configuration) { // system type must have been empty above
-                        entryParser = __parserFactory.createFileEntryParser(new FTPClientConfig(systemType, configuration));
+                        entryParser = parserFactory.createFileEntryParser(new FTPClientConfig(systemType, configuration));
                     } else {
-                        entryParser = __parserFactory.createFileEntryParser(systemType);
+                        entryParser = parserFactory.createFileEntryParser(systemType);
                     }
                     entryParserKey = systemType;
                 }
diff --git a/src/main/java/org/apache/commons/net/ftp/FTPFile.java b/src/main/java/org/apache/commons/net/ftp/FTPFile.java
index 90b8f2f..e7a2200 100644
--- a/src/main/java/org/apache/commons/net/ftp/FTPFile.java
+++ b/src/main/java/org/apache/commons/net/ftp/FTPFile.java
@@ -60,26 +60,26 @@ public class FTPFile implements Serializable
      ***/
     public static final int EXECUTE_PERMISSION = 2;
 
-    private int _type, _hardLinkCount;
-    private long _size;
-    private String _rawListing, _user, _group, _name, _link;
-    private Calendar _date;
+    private int type, hardLinkCount;
+    private long size;
+    private String rawListing, user, group, name, link;
+    private Calendar date;
     // If this is null, then list entry parsing failed
-    private final boolean[] _permissions[]; // e.g. _permissions[USER_ACCESS][READ_PERMISSION]
+    private final boolean[] permissions[]; // e.g. _permissions[USER_ACCESS][READ_PERMISSION]
 
     /*** Creates an empty FTPFile. ***/
     public FTPFile()
     {
-        _permissions = new boolean[3][3];
-        _type = UNKNOWN_TYPE;
+        permissions = new boolean[3][3];
+        type = UNKNOWN_TYPE;
         // init these to values that do not occur in listings
         // so can distinguish which fields are unset
-        _hardLinkCount = 0; // 0 is invalid as a link count
-        _size = -1; // 0 is valid, so use -1
-        _user = "";
-        _group = "";
-        _date = null;
-        _name = null;
+        hardLinkCount = 0; // 0 is invalid as a link count
+        size = -1; // 0 is valid, so use -1
+        user = "";
+        group = "";
+        date = null;
+        name = null;
     }
 
     /**
@@ -90,17 +90,17 @@ public class FTPFile implements Serializable
      */
     FTPFile(final String rawListing)
     {
-        _permissions = null; // flag that entry is invalid
-        _rawListing = rawListing;
-        _type = UNKNOWN_TYPE;
+        this.permissions = null; // flag that entry is invalid
+        this.rawListing = rawListing;
+        this.type = UNKNOWN_TYPE;
         // init these to values that do not occur in listings
         // so can distinguish which fields are unset
-        _hardLinkCount = 0; // 0 is invalid as a link count
-        _size = -1; // 0 is valid, so use -1
-        _user = "";
-        _group = "";
-        _date = null;
-        _name = null;
+        this.hardLinkCount = 0; // 0 is invalid as a link count
+        this.size = -1; // 0 is valid, so use -1
+        this.user = "";
+        this.group = "";
+        this.date = null;
+        this.name = null;
     }
 
 
@@ -112,7 +112,7 @@ public class FTPFile implements Serializable
      ***/
     public void setRawListing(final String rawListing)
     {
-        _rawListing = rawListing;
+        this.rawListing = rawListing;
     }
 
     /***
@@ -123,7 +123,7 @@ public class FTPFile implements Serializable
      ***/
     public String getRawListing()
     {
-        return _rawListing;
+        return rawListing;
     }
 
 
@@ -135,7 +135,7 @@ public class FTPFile implements Serializable
      ***/
     public boolean isDirectory()
     {
-        return _type == DIRECTORY_TYPE;
+        return type == DIRECTORY_TYPE;
     }
 
     /***
@@ -146,7 +146,7 @@ public class FTPFile implements Serializable
      ***/
     public boolean isFile()
     {
-        return _type == FILE_TYPE;
+        return type == FILE_TYPE;
     }
 
     /***
@@ -157,7 +157,7 @@ public class FTPFile implements Serializable
      ***/
     public boolean isSymbolicLink()
     {
-        return _type == SYMBOLIC_LINK_TYPE;
+        return type == SYMBOLIC_LINK_TYPE;
     }
 
     /***
@@ -168,7 +168,7 @@ public class FTPFile implements Serializable
      ***/
     public boolean isUnknown()
     {
-        return _type == UNKNOWN_TYPE;
+        return type == UNKNOWN_TYPE;
     }
 
     /**
@@ -182,7 +182,7 @@ public class FTPFile implements Serializable
      * @since 3.4
      */
     public boolean isValid() {
-        return _permissions != null;
+        return permissions != null;
     }
 
     /***
@@ -193,7 +193,7 @@ public class FTPFile implements Serializable
      ***/
     public void setType(final int type)
     {
-        _type = type;
+        this.type = type;
     }
 
 
@@ -205,7 +205,7 @@ public class FTPFile implements Serializable
      ***/
     public int getType()
     {
-        return _type;
+        return type;
     }
 
 
@@ -216,7 +216,7 @@ public class FTPFile implements Serializable
      ***/
     public void setName(final String name)
     {
-        _name = name;
+        this.name = name;
     }
 
     /***
@@ -226,7 +226,7 @@ public class FTPFile implements Serializable
      ***/
     public String getName()
     {
-        return _name;
+        return name;
     }
 
 
@@ -236,7 +236,7 @@ public class FTPFile implements Serializable
      */
     public void setSize(final long size)
     {
-        _size = size;
+        this.size = size;
     }
 
 
@@ -247,7 +247,7 @@ public class FTPFile implements Serializable
      ***/
     public long getSize()
     {
-        return _size;
+        return size;
     }
 
 
@@ -259,7 +259,7 @@ public class FTPFile implements Serializable
      ***/
     public void setHardLinkCount(final int links)
     {
-        _hardLinkCount = links;
+        this.hardLinkCount = links;
     }
 
 
@@ -271,7 +271,7 @@ public class FTPFile implements Serializable
      ***/
     public int getHardLinkCount()
     {
-        return _hardLinkCount;
+        return hardLinkCount;
     }
 
 
@@ -283,7 +283,7 @@ public class FTPFile implements Serializable
      ***/
     public void setGroup(final String group)
     {
-        _group = group;
+        this.group = group;
     }
 
 
@@ -295,7 +295,7 @@ public class FTPFile implements Serializable
      ***/
     public String getGroup()
     {
-        return _group;
+        return group;
     }
 
 
@@ -307,7 +307,7 @@ public class FTPFile implements Serializable
      ***/
     public void setUser(final String user)
     {
-        _user = user;
+        this.user = user;
     }
 
     /***
@@ -318,7 +318,7 @@ public class FTPFile implements Serializable
      ***/
     public String getUser()
     {
-        return _user;
+        return user;
     }
 
 
@@ -330,7 +330,7 @@ public class FTPFile implements Serializable
      ***/
     public void setLink(final String link)
     {
-        _link = link;
+        this.link = link;
     }
 
 
@@ -343,7 +343,7 @@ public class FTPFile implements Serializable
      ***/
     public String getLink()
     {
-        return _link;
+        return link;
     }
 
 
@@ -356,7 +356,7 @@ public class FTPFile implements Serializable
      ***/
     public void setTimestamp(final Calendar date)
     {
-        _date = date;
+        this.date = date;
     }
 
 
@@ -367,7 +367,7 @@ public class FTPFile implements Serializable
      ***/
     public Calendar getTimestamp()
     {
-        return _date;
+        return date;
     }
 
 
@@ -385,7 +385,7 @@ public class FTPFile implements Serializable
      ***/
     public void setPermission(final int access, final int permission, final boolean value)
     {
-        _permissions[access][permission] = value;
+        permissions[access][permission] = value;
     }
 
 
@@ -404,10 +404,10 @@ public class FTPFile implements Serializable
      ***/
     public boolean hasPermission(final int access, final int permission)
     {
-        if (_permissions == null) {
+        if (permissions == null) {
             return false;
         }
-        return _permissions[access][permission];
+        return permissions[access][permission];
     }
 
     /***
@@ -502,7 +502,7 @@ public class FTPFile implements Serializable
     }
 
     private char formatType(){
-        switch(_type) {
+        switch(type) {
             case FILE_TYPE:
                 return '-';
             case DIRECTORY_TYPE:
diff --git a/src/main/java/org/apache/commons/net/ftp/FTPSCommand.java b/src/main/java/org/apache/commons/net/ftp/FTPSCommand.java
index cd0776e..b4b1f87 100644
--- a/src/main/java/org/apache/commons/net/ftp/FTPSCommand.java
+++ b/src/main/java/org/apache/commons/net/ftp/FTPSCommand.java
@@ -36,7 +36,7 @@ public final class FTPSCommand {
     public static final int DATA_CHANNEL_PROTECTION_LEVEL = PROT;
     public static final int CLEAR_COMMAND_CHANNEL = CCC;
 
-    private static final String[] _commands = {"AUTH","ADAT","PBSZ","PROT","CCC"};
+    private static final String[] commands = {"AUTH","ADAT","PBSZ","PROT","CCC"};
 
     /**
      * Retrieve the FTPS command string corresponding to a specified
@@ -47,6 +47,6 @@ public final class FTPSCommand {
      *  command code.
      */
     public static String getCommand(final int command) {
-        return _commands[command];
+        return commands[command];
     }
 }
diff --git a/src/main/java/org/apache/commons/net/imap/AuthenticatingIMAPClient.java b/src/main/java/org/apache/commons/net/imap/AuthenticatingIMAPClient.java
index c31c7b9..916432d 100644
--- a/src/main/java/org/apache/commons/net/imap/AuthenticatingIMAPClient.java
+++ b/src/main/java/org/apache/commons/net/imap/AuthenticatingIMAPClient.java
@@ -173,7 +173,7 @@ public class AuthenticatingIMAPClient extends IMAPSClient
                 final Mac hmac_md5 = Mac.getInstance("HmacMD5");
                 hmac_md5.init(new SecretKeySpec(password.getBytes(getCharset()), "HmacMD5"));
                 // compute the result:
-                final byte[] hmacResult = _convertToHexString(hmac_md5.doFinal(serverChallenge)).getBytes(getCharset());
+                final byte[] hmacResult = convertToHexString(hmac_md5.doFinal(serverChallenge)).getBytes(getCharset());
                 // join the byte arrays to form the reply
                 final byte[] usernameBytes = username.getBytes(getCharset());
                 final byte[] toEncode = new byte[usernameBytes.length + 1 /* the space */ + hmacResult.length];
@@ -224,7 +224,7 @@ public class AuthenticatingIMAPClient extends IMAPSClient
      * @param a The byte array to convert.
      * @return The resulting String of hex codes.
      */
-    private String _convertToHexString(final byte[] a)
+    private String convertToHexString(final byte[] a)
     {
         final StringBuilder result = new StringBuilder(a.length*2);
         for (final byte element : a)
diff --git a/src/main/java/org/apache/commons/net/imap/IMAP.java b/src/main/java/org/apache/commons/net/imap/IMAP.java
index 89c9dfc..9a39a45 100644
--- a/src/main/java/org/apache/commons/net/imap/IMAP.java
+++ b/src/main/java/org/apache/commons/net/imap/IMAP.java
@@ -57,11 +57,11 @@ public class IMAP extends SocketClient
      */
     protected static final String __DEFAULT_ENCODING = "ISO-8859-1";
 
-    private IMAPState __state;
+    private IMAPState state;
     protected BufferedWriter __writer;
 
     protected BufferedReader _reader;
-    private int _replyCode;
+    private int replyCode;
     private final List<String> _replyLines;
 
     /**
@@ -107,9 +107,9 @@ public class IMAP extends SocketClient
         }
 
     };
-    private volatile IMAPChunkListener __chunkListener;
+    private volatile IMAPChunkListener chunkListener;
 
-    private final char[] _initialID = { 'A', 'A', 'A', 'A' };
+    private final char[] initialID = { 'A', 'A', 'A', 'A' };
 
     /**
      * The default IMAPClient constructor.  Initializes the state
@@ -118,7 +118,7 @@ public class IMAP extends SocketClient
     public IMAP()
     {
         setDefaultPort(DEFAULT_PORT);
-        __state = IMAPState.DISCONNECTED_STATE;
+        state = IMAPState.DISCONNECTED_STATE;
         _reader = null;
         __writer = null;
         _replyLines = new ArrayList<>();
@@ -130,9 +130,9 @@ public class IMAP extends SocketClient
      *
      * @throws IOException
      */
-    private void __getReply() throws IOException
+    private void getReply() throws IOException
     {
-        __getReply(true); // tagged response
+        getReply(true); // tagged response
     }
 
     /**
@@ -142,7 +142,7 @@ public class IMAP extends SocketClient
      * @param wantTag {@code true} if the command expects a tagged response.
      * @throws IOException
      */
-    private void __getReply(final boolean wantTag) throws IOException
+    private void getReply(final boolean wantTag) throws IOException
     {
         _replyLines.clear();
         String line = _reader.readLine();
@@ -166,7 +166,7 @@ public class IMAP extends SocketClient
                     literalCount -= line.length() + 2; // Allow for CRLF
                 }
                 if (isMultiLine) {
-                    final IMAPChunkListener il = __chunkListener;
+                    final IMAPChunkListener il = chunkListener;
                     if (il != null) {
                         final boolean clear = il.chunkReceived(this);
                         if (clear) {
@@ -182,12 +182,12 @@ public class IMAP extends SocketClient
                 _replyLines.add(line);
             }
             // check the response code on the last line
-            _replyCode = IMAPReply.getReplyCode(line);
+            replyCode = IMAPReply.getReplyCode(line);
         } else {
-            _replyCode = IMAPReply.getUntaggedReplyCode(line);
+            replyCode = IMAPReply.getUntaggedReplyCode(line);
         }
 
-        fireReplyReceived(_replyCode, getReplyString());
+        fireReplyReceived(replyCode, getReplyString());
     }
 
     /**
@@ -224,7 +224,7 @@ public class IMAP extends SocketClient
         if (tmo <= 0) { // none set currently
             setSoTimeout(connectTimeout); // use connect timeout to ensure we don't block forever
         }
-        __getReply(false); // untagged response
+        getReply(false); // untagged response
         if (tmo <= 0) {
             setSoTimeout(tmo); // restore the original value
         }
@@ -239,7 +239,7 @@ public class IMAP extends SocketClient
      */
     protected void setState(final IMAP.IMAPState state)
     {
-        __state = state;
+        this.state = state;
     }
 
 
@@ -250,7 +250,7 @@ public class IMAP extends SocketClient
      */
     public IMAP.IMAPState getState()
     {
-        return __state;
+        return state;
     }
 
     /**
@@ -303,8 +303,8 @@ public class IMAP extends SocketClient
 
         fireCommandSent(command, message);
 
-        __getReply();
-        return _replyCode;
+        getReply();
+        return replyCode;
     }
 
     /**
@@ -441,7 +441,7 @@ public class IMAP extends SocketClient
      * @since 3.4
      */
     public void setChunkListener(final IMAPChunkListener listener) {
-        __chunkListener = listener;
+        chunkListener = listener;
     }
 
     /**
@@ -450,18 +450,18 @@ public class IMAP extends SocketClient
      */
     protected String generateCommandID()
     {
-        final String res = new String (_initialID);
+        final String res = new String (initialID);
         // "increase" the ID for the next call
         boolean carry = true; // want to increment initially
-        for (int i = _initialID.length-1; carry && i>=0; i--)
+        for (int i = initialID.length-1; carry && i>=0; i--)
         {
-            if (_initialID[i] == 'Z')
+            if (initialID[i] == 'Z')
             {
-                _initialID[i] = 'A';
+                initialID[i] = 'A';
             }
             else
             {
-                _initialID[i]++;
+                initialID[i]++;
                 carry = false; // did not wrap round
             }
         }
diff --git a/src/main/java/org/apache/commons/net/nntp/ArticleIterator.java b/src/main/java/org/apache/commons/net/nntp/ArticleIterator.java
index 272a870..a7e2b0a 100644
--- a/src/main/java/org/apache/commons/net/nntp/ArticleIterator.java
+++ b/src/main/java/org/apache/commons/net/nntp/ArticleIterator.java
@@ -45,7 +45,7 @@ class ArticleIterator implements Iterator<Article>, Iterable<Article> {
     @Override
     public Article next() {
         final String line = stringIterator.next();
-        return NNTPClient.__parseArticleEntry(line);
+        return NNTPClient.parseArticleEntry(line);
     }
 
     @Override
diff --git a/src/main/java/org/apache/commons/net/nntp/NNTP.java b/src/main/java/org/apache/commons/net/nntp/NNTP.java
index 4b5c265..72f6e09 100644
--- a/src/main/java/org/apache/commons/net/nntp/NNTP.java
+++ b/src/main/java/org/apache/commons/net/nntp/NNTP.java
@@ -87,11 +87,11 @@ public class NNTP extends SocketClient
     // We have to ensure that the protocol communication is in ASCII
     // but we use ISO-8859-1 just in case 8-bit characters cross
     // the wire.
-    private static final Charset __DEFAULT_ENCODING = StandardCharsets.ISO_8859_1;
+    private static final Charset DEFAULT_ENCODING = StandardCharsets.ISO_8859_1;
 
     boolean _isAllowedToPost;
-    int _replyCode;
-    String _replyString;
+    private int replyCode;
+    private String replyString;
 
     /**
      * Wraps {@link SocketClient#_input_}
@@ -121,7 +121,7 @@ public class NNTP extends SocketClient
     public NNTP()
     {
         setDefaultPort(DEFAULT_PORT);
-        _replyString = null;
+        replyString = null;
         _reader_ = null;
         _writer_ = null;
         _isAllowedToPost = false;
@@ -130,33 +130,33 @@ public class NNTP extends SocketClient
 
     private void __getReply() throws IOException
     {
-        _replyString = _reader_.readLine();
+        replyString = _reader_.readLine();
 
-        if (_replyString == null) {
+        if (replyString == null) {
             throw new NNTPConnectionClosedException(
                     "Connection closed without indication.");
         }
 
         // In case we run into an anomaly we don't want fatal index exceptions
         // to be thrown.
-        if (_replyString.length() < 3) {
+        if (replyString.length() < 3) {
             throw new MalformedServerReplyException(
-                "Truncated server reply: " + _replyString);
+                "Truncated server reply: " + replyString);
         }
 
         try
         {
-            _replyCode = Integer.parseInt(_replyString.substring(0, 3));
+            replyCode = Integer.parseInt(replyString.substring(0, 3));
         }
         catch (final NumberFormatException e)
         {
             throw new MalformedServerReplyException(
-                "Could not parse response code.\nServer Reply: " + _replyString);
+                "Could not parse response code.\nServer Reply: " + replyString);
         }
 
-        fireReplyReceived(_replyCode, _replyString + SocketClient.NETASCII_EOL);
+        fireReplyReceived(replyCode, replyString + SocketClient.NETASCII_EOL);
 
-        if (_replyCode == NNTPReply.SERVICE_DISCONTINUED) {
+        if (replyCode == NNTPReply.SERVICE_DISCONTINUED) {
             throw new NNTPConnectionClosedException(
                 "NNTP response 400 received.  Server closed connection.");
         }
@@ -174,13 +174,13 @@ public class NNTP extends SocketClient
         super._connectAction_();
         _reader_ =
             new CRLFLineReader(new InputStreamReader(_input_,
-                                                     __DEFAULT_ENCODING));
+                                                     DEFAULT_ENCODING));
         _writer_ =
             new BufferedWriter(new OutputStreamWriter(_output_,
-                                                      __DEFAULT_ENCODING));
+                                                      DEFAULT_ENCODING));
         __getReply();
 
-        _isAllowedToPost = _replyCode == NNTPReply.SERVER_READY_POSTING_ALLOWED;
+        _isAllowedToPost = replyCode == NNTPReply.SERVER_READY_POSTING_ALLOWED;
     }
 
     /***
@@ -197,7 +197,7 @@ public class NNTP extends SocketClient
         super.disconnect();
         _reader_ = null;
         _writer_ = null;
-        _replyString = null;
+        replyString = null;
         _isAllowedToPost = false;
     }
 
@@ -253,7 +253,7 @@ public class NNTP extends SocketClient
         fireCommandSent(command, message);
 
         __getReply();
-        return _replyCode;
+        return replyCode;
     }
 
 
@@ -343,7 +343,7 @@ public class NNTP extends SocketClient
      ***/
     public int getReplyCode()
     {
-        return _replyCode;
+        return replyCode;
     }
 
     /***
@@ -366,7 +366,7 @@ public class NNTP extends SocketClient
     public int getReply() throws IOException
     {
         __getReply();
-        return _replyCode;
+        return replyCode;
     }
 
 
@@ -378,7 +378,7 @@ public class NNTP extends SocketClient
      ***/
     public String getReplyString()
     {
-        return _replyString;
+        return replyString;
     }
 
 
diff --git a/src/main/java/org/apache/commons/net/nntp/NNTPClient.java b/src/main/java/org/apache/commons/net/nntp/NNTPClient.java
index 9b7ee2c..886866f 100644
--- a/src/main/java/org/apache/commons/net/nntp/NNTPClient.java
+++ b/src/main/java/org/apache/commons/net/nntp/NNTPClient.java
@@ -125,7 +125,7 @@ public class NNTPClient extends NNTP
      *     s = name of the group.)
      */
 
-    private static void __parseGroupReply(final String reply, final NewsgroupInfo info)
+    private static void parseGroupReply(final String reply, final NewsgroupInfo info)
     throws MalformedServerReplyException
     {
         final String tokens[] = reply.split(" ");
@@ -134,15 +134,15 @@ public class NNTPClient extends NNTP
             try
             {
                 // Get estimated article count
-                info._setArticleCount(Long.parseLong(tokens[i++]));
+                info.setArticleCount(Long.parseLong(tokens[i++]));
                 // Get first article number
-                info._setFirstArticle(Long.parseLong(tokens[i++]));
+                info.setFirstArticle(Long.parseLong(tokens[i++]));
                 // Get last article number
-                info._setLastArticle(Long.parseLong(tokens[i++]));
+                info.setLastArticle(Long.parseLong(tokens[i++]));
                 // Get newsgroup name
-                info._setNewsgroup(tokens[i++]);
+                info.setNewsgroup(tokens[i++]);
 
-                info._setPostingPermission(NewsgroupInfo.UNKNOWN_POSTING_PERMISSION);
+                info.setPostingPermission(NewsgroupInfo.UNKNOWN_POSTING_PERMISSION);
                 return ;
             } catch (final NumberFormatException e)
             {
@@ -156,7 +156,7 @@ public class NNTPClient extends NNTP
 
 
     // Format: group last first p
-    static NewsgroupInfo __parseNewsgroupListEntry(final String entry)
+    static NewsgroupInfo parseNewsgroupListEntry(final String entry)
     {
         final String tokens[] = entry.split(" ");
         if (tokens.length < 4) {
@@ -166,18 +166,18 @@ public class NNTPClient extends NNTP
 
         int i = 0;
 
-        result._setNewsgroup(tokens[i++]);
+        result.setNewsgroup(tokens[i++]);
 
         try
         {
             final long lastNum = Long.parseLong(tokens[i++]);
             final long firstNum = Long.parseLong(tokens[i++]);
-            result._setFirstArticle(firstNum);
-            result._setLastArticle(lastNum);
+            result.setFirstArticle(firstNum);
+            result.setLastArticle(lastNum);
             if ((firstNum == 0) && (lastNum == 0)) {
-                result._setArticleCount(0);
+                result.setArticleCount(0);
             } else {
-                result._setArticleCount(lastNum - firstNum + 1);
+                result.setArticleCount(lastNum - firstNum + 1);
             }
         } catch (final NumberFormatException e) {
             return null;
@@ -187,21 +187,21 @@ public class NNTPClient extends NNTP
         {
         case 'y':
         case 'Y':
-            result._setPostingPermission(
+            result.setPostingPermission(
                 NewsgroupInfo.PERMITTED_POSTING_PERMISSION);
             break;
         case 'n':
         case 'N':
-            result._setPostingPermission(
+            result.setPostingPermission(
                 NewsgroupInfo.PROHIBITED_POSTING_PERMISSION);
             break;
         case 'm':
         case 'M':
-            result._setPostingPermission(
+            result.setPostingPermission(
                 NewsgroupInfo.MODERATED_POSTING_PERMISSION);
             break;
         default:
-            result._setPostingPermission(
+            result.setPostingPermission(
                 NewsgroupInfo.UNKNOWN_POSTING_PERMISSION);
             break;
         }
@@ -217,7 +217,7 @@ public class NNTPClient extends NNTP
      * will be true, and the subject will contain the raw info.
      * @since 3.0
      */
-    static Article __parseArticleEntry(final String line) {
+    static Article parseArticleEntry(final String line) {
         // Extract the article information
         // Mandatory format (from NNTP RFC 2980) is :
         // articleNumber\tSubject\tAuthor\tDate\tID\tReference(s)\tByte Count\tLine Count
@@ -251,7 +251,7 @@ public class NNTPClient extends NNTP
         String line;
         try (final BufferedReader reader = new DotTerminatedMessageReader(_reader_)) {
             while ((line = reader.readLine()) != null) {
-                final NewsgroupInfo tmp = __parseNewsgroupListEntry(line);
+                final NewsgroupInfo tmp = parseNewsgroupListEntry(line);
                 if (tmp != null) {
                     list.addElement(tmp);
                 } else {
@@ -731,7 +731,7 @@ public class NNTPClient extends NNTP
         }
 
         if (info != null) {
-            __parseGroupReply(getReplyString(), info);
+            parseGroupReply(getReplyString(), info);
         }
 
         return true;
@@ -1442,7 +1442,7 @@ public class NNTPClient extends NNTP
 
                 if (replyCode == NNTPReply.AUTHENTICATION_ACCEPTED)
                     {
-                        _isAllowedToPost = true;
+                        this._isAllowedToPost = true;
                         return true;
                     }
             }
diff --git a/src/main/java/org/apache/commons/net/nntp/NNTPCommand.java b/src/main/java/org/apache/commons/net/nntp/NNTPCommand.java
index 8a9e219..03726a8 100644
--- a/src/main/java/org/apache/commons/net/nntp/NNTPCommand.java
+++ b/src/main/java/org/apache/commons/net/nntp/NNTPCommand.java
@@ -48,7 +48,7 @@ public final class NNTPCommand
     private NNTPCommand()
     {}
 
-    private static final String[] _commands = {
+    private static final String[] commands = {
         "ARTICLE", "BODY", "GROUP", "HEAD", "HELP", "IHAVE", "LAST", "LIST",
         "NEWGROUPS", "NEWNEWS", "NEXT", "POST", "QUIT", "SLAVE", "STAT",
         "AUTHINFO", "XOVER", "XHDR"
@@ -65,7 +65,7 @@ public final class NNTPCommand
      ***/
     public static String getCommand(final int command)
     {
-        return _commands[command];
+        return commands[command];
     }
 
 }
diff --git a/src/main/java/org/apache/commons/net/nntp/NewsgroupInfo.java b/src/main/java/org/apache/commons/net/nntp/NewsgroupInfo.java
index 23b2b88..ffcbf91 100644
--- a/src/main/java/org/apache/commons/net/nntp/NewsgroupInfo.java
+++ b/src/main/java/org/apache/commons/net/nntp/NewsgroupInfo.java
@@ -57,27 +57,27 @@ public final class NewsgroupInfo
     private long lastArticle;
     private int postingPermission;
 
-    void _setNewsgroup(final String newsgroup)
+    void setNewsgroup(final String newsgroup)
     {
         this.newsgroup = newsgroup;
     }
 
-    void _setArticleCount(final long count)
+    void setArticleCount(final long count)
     {
         estimatedArticleCount = count;
     }
 
-    void _setFirstArticle(final long first)
+    void setFirstArticle(final long first)
     {
         firstArticle = first;
     }
 
-    void _setLastArticle(final long last)
+    void setLastArticle(final long last)
     {
         lastArticle = last;
     }
 
-    void _setPostingPermission(final int permission)
+    void setPostingPermission(final int permission)
     {
         postingPermission = permission;
     }
diff --git a/src/main/java/org/apache/commons/net/nntp/NewsgroupIterator.java b/src/main/java/org/apache/commons/net/nntp/NewsgroupIterator.java
index ee4e25a..6275f53 100644
--- a/src/main/java/org/apache/commons/net/nntp/NewsgroupIterator.java
+++ b/src/main/java/org/apache/commons/net/nntp/NewsgroupIterator.java
@@ -40,7 +40,7 @@ class NewsgroupIterator implements Iterator<NewsgroupInfo>, Iterable<NewsgroupIn
     @Override
     public NewsgroupInfo next() {
         final String line = stringIterator.next();
-        return NNTPClient.__parseNewsgroupListEntry(line);
+        return NNTPClient.parseNewsgroupListEntry(line);
     }
 
     @Override
diff --git a/src/main/java/org/apache/commons/net/smtp/AuthenticatingSMTPClient.java b/src/main/java/org/apache/commons/net/smtp/AuthenticatingSMTPClient.java
index 62f895a..59f7d00 100644
--- a/src/main/java/org/apache/commons/net/smtp/AuthenticatingSMTPClient.java
+++ b/src/main/java/org/apache/commons/net/smtp/AuthenticatingSMTPClient.java
@@ -235,7 +235,7 @@ public class AuthenticatingSMTPClient extends SMTPSClient
             final Mac hmac_md5 = Mac.getInstance("HmacMD5");
             hmac_md5.init(new SecretKeySpec(password.getBytes(getCharset()), "HmacMD5"));
             // compute the result:
-            final byte[] hmacResult = _convertToHexString(hmac_md5.doFinal(serverChallenge)).getBytes(getCharset());
+            final byte[] hmacResult = convertToHexString(hmac_md5.doFinal(serverChallenge)).getBytes(getCharset());
             // join the byte arrays to form the reply
             final byte[] usernameBytes = username.getBytes(getCharset());
             final byte[] toEncode = new byte[usernameBytes.length + 1 /* the space */ + hmacResult.length];
@@ -274,7 +274,7 @@ public class AuthenticatingSMTPClient extends SMTPSClient
      * @param a The byte array to convert.
      * @return The resulting String of hex codes.
      */
-    private String _convertToHexString(final byte[] a)
+    private String convertToHexString(final byte[] a)
     {
         final StringBuilder result = new StringBuilder(a.length*2);
         for (final byte element : a)
diff --git a/src/main/java/org/apache/commons/net/smtp/RelayPath.java b/src/main/java/org/apache/commons/net/smtp/RelayPath.java
index e7a5524..c49c152 100644
--- a/src/main/java/org/apache/commons/net/smtp/RelayPath.java
+++ b/src/main/java/org/apache/commons/net/smtp/RelayPath.java
@@ -31,8 +31,8 @@ import java.util.Vector;
 
 public final class RelayPath
 {
-    Vector<String> path;
-    String emailAddress;
+    private Vector<String> path;
+    private String emailAddress;
 
     /***
      * Create a relay path with the specified email address as the ultimate
diff --git a/src/main/java/org/apache/commons/net/telnet/Telnet.java b/src/main/java/org/apache/commons/net/telnet/Telnet.java
index a640c23..80ba39d 100644
--- a/src/main/java/org/apache/commons/net/telnet/Telnet.java
+++ b/src/main/java/org/apache/commons/net/telnet/Telnet.java
@@ -61,7 +61,7 @@ class Telnet extends SocketClient
     /* public */
     static final int DEFAULT_PORT =  23;
 
-    int[] doResponse, willResponse, options;
+    private int[] doResponse, willResponse, options;
 
     /* TERMINAL-TYPE option (start)*/
     /***
diff --git a/src/main/java/org/apache/commons/net/telnet/TelnetCommand.java b/src/main/java/org/apache/commons/net/telnet/TelnetCommand.java
index f66d1fd..57c1228 100644
--- a/src/main/java/org/apache/commons/net/telnet/TelnetCommand.java
+++ b/src/main/java/org/apache/commons/net/telnet/TelnetCommand.java
@@ -93,13 +93,13 @@ public final class TelnetCommand
     public static final int SYNCH = 242;
 
     /*** String representations of commands. ***/
-    private static final String __commandString[] = {
+    private static final String commandString[] = {
                 "IAC", "DONT", "DO", "WONT", "WILL", "SB", "GA", "EL", "EC", "AYT",
                 "AO", "IP", "BRK", "DMARK", "NOP", "SE", "EOR", "ABORT", "SUSP", "EOF"
             };
 
-    private static final int __FIRST_COMMAND = IAC;
-    private static final int __LAST_COMMAND = EOF;
+    private static final int FIRST_COMMAND = IAC;
+    private static final int LAST_COMMAND = EOF;
 
     /***
      * Returns the string representation of the telnet protocol command
@@ -110,7 +110,7 @@ public final class TelnetCommand
      ***/
     public static String getCommand(final int code)
     {
-        return __commandString[__FIRST_COMMAND - code];
+        return commandString[FIRST_COMMAND - code];
     }
 
     /***
@@ -122,7 +122,7 @@ public final class TelnetCommand
      **/
     public static boolean isValidCommand(final int code)
     {
-        return code <= __FIRST_COMMAND && code >= __LAST_COMMAND;
+        return code <= FIRST_COMMAND && code >= LAST_COMMAND;
     }
 
     // Cannot be instantiated
diff --git a/src/main/java/org/apache/commons/net/telnet/WindowSizeOptionHandler.java b/src/main/java/org/apache/commons/net/telnet/WindowSizeOptionHandler.java
index 485f178..ae5c43b 100644
--- a/src/main/java/org/apache/commons/net/telnet/WindowSizeOptionHandler.java
+++ b/src/main/java/org/apache/commons/net/telnet/WindowSizeOptionHandler.java
@@ -26,12 +26,12 @@ public class WindowSizeOptionHandler extends TelnetOptionHandler
     /***
      * Horizontal Size
      ***/
-    private int m_nWidth = 80;
+    private int width = 80;
 
     /***
      * Vertical Size
      ***/
-    private int m_nHeight = 24;
+    private int height = 24;
 
     /***
      * Window size option
@@ -67,8 +67,8 @@ public class WindowSizeOptionHandler extends TelnetOptionHandler
             acceptremote
         );
 
-        m_nWidth = nWidth;
-        m_nHeight = nHeight;
+        width = nWidth;
+        height = nHeight;
     }
 
     /***
@@ -90,8 +90,8 @@ public class WindowSizeOptionHandler extends TelnetOptionHandler
             false
         );
 
-        m_nWidth = nWidth;
-        m_nHeight = nHeight;
+        width = nWidth;
+        height = nHeight;
     }
 
     /***
@@ -103,25 +103,25 @@ public class WindowSizeOptionHandler extends TelnetOptionHandler
     @Override
     public int[] startSubnegotiationLocal()
     {
-        final int nCompoundWindowSize = m_nWidth * 0x10000 + m_nHeight;
+        final int nCompoundWindowSize = width * 0x10000 + height;
         int nResponseSize = 5;
         int nIndex;
         int nShift;
         int nTurnedOnBits;
 
-        if (m_nWidth % 0x100 == 0xFF) {
+        if (width % 0x100 == 0xFF) {
             nResponseSize += 1;
         }
 
-        if (m_nWidth / 0x100 == 0xFF) {
+        if (width / 0x100 == 0xFF) {
             nResponseSize += 1;
         }
 
-        if (m_nHeight % 0x100 == 0xFF) {
+        if (height % 0x100 == 0xFF) {
             nResponseSize += 1;
         }
 
-        if (m_nHeight / 0x100 == 0xFF) {
+        if (height / 0x100 == 0xFF) {
             nResponseSize += 1;
         }
 
diff --git a/src/main/java/org/apache/commons/net/tftp/TFTPAckPacket.java b/src/main/java/org/apache/commons/net/tftp/TFTPAckPacket.java
index f680647..7317a07 100644
--- a/src/main/java/org/apache/commons/net/tftp/TFTPAckPacket.java
+++ b/src/main/java/org/apache/commons/net/tftp/TFTPAckPacket.java
@@ -44,7 +44,7 @@ import java.net.InetAddress;
 public final class TFTPAckPacket extends TFTPPacket
 {
     /*** The block number being acknowledged by the packet. ***/
-    int _blockNumber;
+    int blockNumber;
 
     /***
      * Creates an acknowledgment packet to be sent to a host at a given port
@@ -57,7 +57,7 @@ public final class TFTPAckPacket extends TFTPPacket
     public TFTPAckPacket(final InetAddress destination, final int port, final int blockNumber)
     {
         super(TFTPPacket.ACKNOWLEDGEMENT, destination, port);
-        _blockNumber = blockNumber;
+        this.blockNumber = blockNumber;
     }
 
     /***
@@ -81,7 +81,7 @@ public final class TFTPAckPacket extends TFTPPacket
             throw new TFTPPacketException("TFTP operator code does not match type.");
         }
 
-        _blockNumber = (((data[2] & 0xff) << 8) | (data[3] & 0xff));
+        this.blockNumber = (((data[2] & 0xff) << 8) | (data[3] & 0xff));
     }
 
     /***
@@ -100,11 +100,11 @@ public final class TFTPAckPacket extends TFTPPacket
     {
         data[0] = 0;
         data[1] = (byte)type;
-        data[2] = (byte)((_blockNumber & 0xffff) >> 8);
-        data[3] = (byte)(_blockNumber & 0xff);
+        data[2] = (byte)((blockNumber & 0xffff) >> 8);
+        data[3] = (byte)(blockNumber & 0xff);
 
-        datagram.setAddress(_address);
-        datagram.setPort(_port);
+        datagram.setAddress(address);
+        datagram.setPort(port);
         datagram.setData(data);
         datagram.setLength(4);
 
@@ -131,10 +131,10 @@ public final class TFTPAckPacket extends TFTPPacket
         data = new byte[4];
         data[0] = 0;
         data[1] = (byte)type;
-        data[2] = (byte)((_blockNumber & 0xffff) >> 8);
-        data[3] = (byte)(_blockNumber & 0xff);
+        data[2] = (byte)((blockNumber & 0xffff) >> 8);
+        data[3] = (byte)(blockNumber & 0xff);
 
-        return new DatagramPacket(data, data.length, _address, _port);
+        return new DatagramPacket(data, data.length, address, port);
     }
 
 
@@ -145,7 +145,7 @@ public final class TFTPAckPacket extends TFTPPacket
      ***/
     public int getBlockNumber()
     {
-        return _blockNumber;
+        return blockNumber;
     }
 
 
@@ -156,7 +156,7 @@ public final class TFTPAckPacket extends TFTPPacket
      ***/
     public void setBlockNumber(final int blockNumber)
     {
-        _blockNumber = blockNumber;
+        this.blockNumber = blockNumber;
     }
 
     /**
@@ -165,7 +165,7 @@ public final class TFTPAckPacket extends TFTPPacket
      */
     @Override
     public String toString() {
-        return super.toString() + " ACK " + _blockNumber;
+        return super.toString() + " ACK " + blockNumber;
     }
 }
 
diff --git a/src/main/java/org/apache/commons/net/tftp/TFTPClient.java b/src/main/java/org/apache/commons/net/tftp/TFTPClient.java
index 3d16ac0..0ee837b 100644
--- a/src/main/java/org/apache/commons/net/tftp/TFTPClient.java
+++ b/src/main/java/org/apache/commons/net/tftp/TFTPClient.java
@@ -63,7 +63,7 @@ public class TFTPClient extends TFTP
     public static final int DEFAULT_MAX_TIMEOUTS = 5;
 
     /*** The maximum number of timeouts allowed before failing. ***/
-    private int __maxTimeouts;
+    private int maxTimeouts;
 
     /*** The number of bytes received in the ongoing download. ***/
     private long totalBytesReceived = 0;
@@ -78,7 +78,7 @@ public class TFTPClient extends TFTP
      ***/
     public TFTPClient()
     {
-        __maxTimeouts = DEFAULT_MAX_TIMEOUTS;
+        maxTimeouts = DEFAULT_MAX_TIMEOUTS;
     }
 
     /***
@@ -94,9 +94,9 @@ public class TFTPClient extends TFTP
     public void setMaxTimeouts(final int numTimeouts)
     {
         if (numTimeouts < 1) {
-            __maxTimeouts = 1;
+            maxTimeouts = 1;
         } else {
-            __maxTimeouts = numTimeouts;
+            maxTimeouts = numTimeouts;
         }
     }
 
@@ -108,7 +108,7 @@ public class TFTPClient extends TFTP
      ***/
     public int getMaxTimeouts()
     {
-        return __maxTimeouts;
+        return maxTimeouts;
     }
 
 
@@ -242,11 +242,11 @@ public class TFTPClient extends TFTP
                             bufferedSend(error);
                         }
                     } catch (final SocketException e) {
-                        if (++timeouts >= __maxTimeouts) {
+                        if (++timeouts >= maxTimeouts) {
                             throw new IOException("Connection timed out.");
                         }
                     } catch (final InterruptedIOException e) {
-                        if (++timeouts >= __maxTimeouts) {
+                        if (++timeouts >= maxTimeouts) {
                             throw new IOException("Connection timed out.");
                         }
                     } catch (final TFTPPacketException e) {
@@ -435,11 +435,11 @@ public class TFTPClient extends TFTP
                             bufferedSend(error);
                         }
                     } catch (final SocketException e) {
-                        if (++timeouts >= __maxTimeouts) {
+                        if (++timeouts >= maxTimeouts) {
                             throw new IOException("Connection timed out.");
                         }
                     } catch (final InterruptedIOException e) {
-                        if (++timeouts >= __maxTimeouts) {
+                        if (++timeouts >= maxTimeouts) {
                             throw new IOException("Connection timed out.");
                         }
                     } catch (final TFTPPacketException e) {
diff --git a/src/main/java/org/apache/commons/net/tftp/TFTPDataPacket.java b/src/main/java/org/apache/commons/net/tftp/TFTPDataPacket.java
index fe9b5a2..f542388 100644
--- a/src/main/java/org/apache/commons/net/tftp/TFTPDataPacket.java
+++ b/src/main/java/org/apache/commons/net/tftp/TFTPDataPacket.java
@@ -53,13 +53,13 @@ public final class TFTPDataPacket extends TFTPPacket
     int blockNumber;
 
     /*** The length of the data. ***/
-    int length;
+    private int length;
 
     /*** The offset into the _data array at which the data begins. ***/
-    int offset;
+    private int offset;
 
     /*** The data stored in the packet. ***/
-    byte[] data;
+    private byte[] data;
 
     /***
      * Creates a data packet to be sent to a host at a given port
@@ -152,8 +152,8 @@ public final class TFTPDataPacket extends TFTPPacket
             System.arraycopy(this.data, offset, data, 4, length);
         }
 
-        datagram.setAddress(_address);
-        datagram.setPort(_port);
+        datagram.setAddress(address);
+        datagram.setPort(port);
         datagram.setData(data);
         datagram.setLength(length + 4);
 
@@ -185,7 +185,7 @@ public final class TFTPDataPacket extends TFTPPacket
 
         System.arraycopy(this.data, offset, data, 4, length);
 
-        return new DatagramPacket(data, length + 4, _address, _port);
+        return new DatagramPacket(data, length + 4, address, port);
     }
 
     /***
diff --git a/src/main/java/org/apache/commons/net/tftp/TFTPErrorPacket.java b/src/main/java/org/apache/commons/net/tftp/TFTPErrorPacket.java
index 7d71c9f..50b879b 100644
--- a/src/main/java/org/apache/commons/net/tftp/TFTPErrorPacket.java
+++ b/src/main/java/org/apache/commons/net/tftp/TFTPErrorPacket.java
@@ -70,10 +70,10 @@ public final class TFTPErrorPacket extends TFTPPacket
     public static final int NO_SUCH_USER = 7;
 
     /*** The error code of this packet. ***/
-    int error;
+    private int error;
 
     /*** The error message of this packet. ***/
-    String message;
+    private String message;
 
     /***
      * Creates an error packet to be sent to a host at a given port
@@ -161,8 +161,8 @@ public final class TFTPErrorPacket extends TFTPPacket
 
         data[length + 4] = 0;
 
-        datagram.setAddress(_address);
-        datagram.setPort(_port);
+        datagram.setAddress(address);
+        datagram.setPort(port);
         datagram.setData(data);
         datagram.setLength(length + 4);
 
@@ -200,7 +200,7 @@ public final class TFTPErrorPacket extends TFTPPacket
 
         data[length + 4] = 0;
 
-        return new DatagramPacket(data, data.length, _address, _port);
+        return new DatagramPacket(data, data.length, address, port);
     }
 
 
diff --git a/src/main/java/org/apache/commons/net/tftp/TFTPPacket.java b/src/main/java/org/apache/commons/net/tftp/TFTPPacket.java
index 623eb9f..0fa9ebd 100644
--- a/src/main/java/org/apache/commons/net/tftp/TFTPPacket.java
+++ b/src/main/java/org/apache/commons/net/tftp/TFTPPacket.java
@@ -104,10 +104,10 @@ public abstract class TFTPPacket
     int type;
 
     /*** The port the packet came from or is going to. ***/
-    int _port;
+    int port;
 
     /*** The host the packet is going to be sent or where it came from. ***/
-    InetAddress _address;
+    InetAddress address;
 
     /***
      * When you receive a datagram that you expect to be a TFTP packet, you use
@@ -170,8 +170,8 @@ public abstract class TFTPPacket
     TFTPPacket(final int type, final InetAddress address, final int port)
     {
         this.type = type;
-        this._address = address;
-        this._port = port;
+        this.address = address;
+        this.port = port;
     }
 
     /***
@@ -219,7 +219,7 @@ public abstract class TFTPPacket
      ***/
     public final InetAddress getAddress()
     {
-        return _address;
+        return address;
     }
 
     /***
@@ -230,7 +230,7 @@ public abstract class TFTPPacket
      ***/
     public final int getPort()
     {
-        return _port;
+        return port;
     }
 
     /***
@@ -239,7 +239,7 @@ public abstract class TFTPPacket
      ***/
     public final void setPort(final int port)
     {
-        _port = port;
+        this.port = port;
     }
 
     /*** Sets the host address where the packet is going to be sent.
@@ -247,7 +247,7 @@ public abstract class TFTPPacket
      ***/
     public final void setAddress(final InetAddress address)
     {
-        _address = address;
+        this.address = address;
     }
 
     /**
@@ -256,6 +256,6 @@ public abstract class TFTPPacket
      */
     @Override
     public String toString() {
-        return _address + " " + _port + " " + type;
+        return address + " " + port + " " + type;
     }
 }
diff --git a/src/main/java/org/apache/commons/net/tftp/TFTPRequestPacket.java b/src/main/java/org/apache/commons/net/tftp/TFTPRequestPacket.java
index 8457eed..c9f0be9 100644
--- a/src/main/java/org/apache/commons/net/tftp/TFTPRequestPacket.java
+++ b/src/main/java/org/apache/commons/net/tftp/TFTPRequestPacket.java
@@ -191,8 +191,8 @@ public abstract class TFTPRequestPacket extends TFTPPacket
         System.arraycopy(modeBytes[mode], 0, data, fileLength + 3,
                          modeLength);
 
-        datagram.setAddress(_address);
-        datagram.setPort(_port);
+        datagram.setAddress(address);
+        datagram.setPort(port);
         datagram.setData(data);
         datagram.setLength(fileLength + modeLength + 3);
 
@@ -227,7 +227,7 @@ public abstract class TFTPRequestPacket extends TFTPPacket
         System.arraycopy(modeBytes[mode], 0, data, fileLength + 3,
                          modeLength);
 
-        return new DatagramPacket(data, data.length, _address, _port);
+        return new DatagramPacket(data, data.length, address, port);
     }
 
     /***
diff --git a/src/test/java/org/apache/commons/net/tftp/TFTPServerMain.java b/src/test/java/org/apache/commons/net/tftp/TFTPServerMain.java
index b374b97..a27f25f 100644
--- a/src/test/java/org/apache/commons/net/tftp/TFTPServerMain.java
+++ b/src/test/java/org/apache/commons/net/tftp/TFTPServerMain.java
@@ -101,9 +101,9 @@ public class TFTPServerMain {
                         if (packet instanceof TFTPAckPacket) {
                             final TFTPAckPacket ack = (TFTPAckPacket) packet;
                             System.out.println("Change ack block num");
-                            ack._blockNumber--;
+                            ack.blockNumber--;
                             super.sendData(tftp, packet);
-                            ack._blockNumber++;
+                            ack.blockNumber++;
                         }
                         break;
                     case 2: