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Posted to issues@activemq.apache.org by "Daniel Kulp (JIRA)" <ji...@apache.org> on 2015/10/28 14:59:27 UTC
[jira] [Updated] (AMQ-5959) NullPointerException in finally blocks
[ https://issues.apache.org/jira/browse/AMQ-5959?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Daniel Kulp updated AMQ-5959:
-----------------------------
Fix Version/s: 5.11.3
> NullPointerException in finally blocks
> --------------------------------------
>
> Key: AMQ-5959
> URL: https://issues.apache.org/jira/browse/AMQ-5959
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker
> Affects Versions: 5.8.0, 5.12.0
> Reporter: William McDonald
> Priority: Minor
> Labels: easyfix
> Fix For: 5.12.1, 5.11.3, 5.13.0
>
>
> Try blocks including a finally block that references a potential null object generating a NullPointerException.
> In The DestinationView.sendTextMessage(java.util.Map, ...) method for example (http://grepcode.com/file/repo1.maven.org/maven2/org.apache.activemq/activemq-broker/5.11.1/org/apache/activemq/broker/jmx/DestinationView.java#DestinationView.sendTextMessage%28java.util.Map%2Cjava.lang.String%2Cjava.lang.String%2Cjava.lang.String%29), I noticed code like the following:
> Connection connection = null;
> try {
> connection = cf.createConnection(userName, password);
> ...
> return msg.getJMSMessageID();
> } finally {
> connection.close();
> }
> There is no catch block and since an exception in the createConnection method could be thrown, connection would be null in the finally block, causing a NPE and masking the real exception.
> There may be other forms of this bad style which a code style checker should be able to locate for you.
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