[jira] [Created] (GUACAMOLE-497) Ensure guacamole-client source is compatible with Java 9

["Michael Jumper (JIRA)" <ji...@apache.org>]

Michael Jumper created GUACAMOLE-497:
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             Summary: Ensure guacamole-client source is compatible with Java 9
                 Key: GUACAMOLE-497
                 URL: https://issues.apache.org/jira/browse/GUACAMOLE-497
             Project: Guacamole
          Issue Type: Task
          Components: guacamole-client
            Reporter: Michael Jumper


guacamole-client is intended to be compatible at a source level with Java 6 and later (though some Maven plugins require at least a version 7 JRE), however a number of functions and classes have been deprecated as of Java 9, resulting in warnings and a failed build:
 * Wrapper class constructors {{new Integer(String)}} and {{new Long(String)}} have been deprecated in favor of {{Integer.valueOf(String)}} and {{Long.valueOf(String)}}.
 * The {{XMLReaderFactory}} class used to parse {{user-mapping.xml}} has been deprecated in favor of {{SAXParserFactory}}.

Migrating away from the old functions and classes _should_ be safe, as they have been defined since at least Java 6:

* [{{SAXParserFactory.newInstance()}}|https://docs.oracle.com/javase/6/docs/api/javax/xml/parsers/SAXParserFactory.html#newInstance()],
 [{{SAXParserFactory.newSAXParser()}}|https://docs.oracle.com/javase/6/docs/api/javax/xml/parsers/SAXParserFactory.html#newSAXParser()], and [{{SAXParser.parse()}}|https://docs.oracle.com/javase/6/docs/api/javax/xml/parsers/SAXParser.html#parse(java.io.File, org.xml.sax.helpers.DefaultHandler)]
* [{{Integer.valueOf(String)}}|https://docs.oracle.com/javase/6/docs/api/java/lang/Integer.html#valueOf(java.lang.String)]
* [{{Long.valueOf(String)}}|https://docs.oracle.com/javase/6/docs/api/java/lang/Long.html#valueOf(java.lang.String)]





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