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This FAQ is community-managed.

This FAQ encompasses the various tools available that support Java development. [FAQ Previously managed by John Mitchell].

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Where do I submit bugs found in the Java platform?
Tools
John Zukowski PREMIUM, Sep 29, 2007
You can request a feature or report a bug at http://bugs.sun.com/services/bugreport/index.jsp.

Where do I get the latest Java 7 early access release?
Tools
John Zukowski PREMIUM, Sep 29, 2007
Java SE 7 is available as part of java.net: https://jdk7.dev.java.net/.

How do I disable GZIP compress with the pack200 tool?
Tools
John Zukowski PREMIUM, Sep 29, 2007
Use the --no-gzip option: pack200 --no-gzip file.jar.pack file.jar

When were the pack200 and unpack200 commands introduced to the JDK?
Tools
John Zukowski PREMIUM, Sep 29, 2007
You'll first find them a part of the 1.5 Java SE release.

What are the pack200 and unpack200 command-line tools for?
Tools
John Zukowski PREMIUM, Sep 29, 2007
The jar command-line tool packages files using ZIP compression. On the other hand, pack200 and unpack200 use GZIP compression format.

How to extract a jar file. I want to extract a jar file named 'myApp.jar'. The file is in c:\jar\myApp.jar. I want it to be extracted to c:\jar. What options are available?
Tools
Byron Tymvios, May 16, 2006
A jar file can be extracted using the jar command that is part of the JDK. It can be found at <JAVA_HOME>\bin\jar.exe on Windows machines and at...

Can i use javadoc create links from classes and members to locations in the source code itself?
Java:Language, Tools:JavaDoc
Davanum Srinivas PREMIUM, Feb 28, 2002
Yes, JDK1.4's javadoc utility has a new "-linksource" option.

Can I use CAB files with the Java Plug-in?
Tools:Browsers:Plug-in, Java:API:Applets:Browsers:Plug-in
John Zukowski PREMIUM, Feb 27, 2002
No. CAB file support is specific to the Microsoft runtime. If you want to bundle your class files together with the Java Plug-in, you should use JAR files...

Where can i find a list of all available Java Compilers of various flavors?
Java:Language, Tools:Misc
Davanum Srinivas PREMIUM, Jan 21, 2002
Compiling the Java Programming Language. Java compilers

What is GCJ?
Java:Language, Tools:Misc
Davanum Srinivas PREMIUM, Jan 21, 2002
GCJ is a portable, optimizing, ahead-of-time compiler for the Java Programming Language. It can compile: Java source code directly to native machine...

Netscape Communicator browsers permit automatically starting the Java runtime at browser startup by specifying a -java command-line option. Is there any way to auto-start the Java Plug-in at browser startup...
Tools:Browsers, Java:API:Applets:Browsers:Plug-in, Java:API:Applets:Browsers:Internet Explorer
Jens Dibbern PREMIUM, Jan 18, 2002
Since the Sun Java Plug-in is third party code for IE, Microsoft could not anticipate your wish and reserve command-line parameters for it. What you could...

Where can i find information on the changes between J2SE1.2 and J2SE 1.3? More generally is there a tool that allows me to look at differences between two versions of an API?
Java:Language, Tools:JavaDoc
Davanum Srinivas PREMIUM, Dec 25, 2001
JDiff is great for reporting what has changed between two releases of a product. For example... Differences between J2SE1.2 and J2SE1.3 Differences...

Are there any open source/free UML tools for Java developers?
Tools, Process:UML:Tools
Sean Sullivan, Nov 30, 2001
Open-source / free tools: ArgoUML http://www.argouml.org/ JUG - Java UML Generator http://jug.sourceforge.net/ UML Modeller...

Where can I find out what JAR files are currently cached by the Java Plug-in?
Tools:Browsers:Plug-in, Java:API:Applets:Browsers:Plug-in
John Zukowski PREMIUM, Nov 29, 2001
The control panel for the 1.4 version of the Java Plug-in has a View JARs in Cache option. From there, you can delete individual JAR files, look for updates...

How can I disable caching with the Java Plug-in?
Tools:Browsers:Plug-in, Java:API:Applets:Browsers:Plug-in
John Zukowski PREMIUM, Nov 29, 2001
The 1.4 version of the Plug-in supporting disabling. Bring up the control panel for the Plug-in and select the Cache tab. From there, you can uncheck the...

Where can I find any code-snippets for the new common DOM API for the JDK 1.4 Plug-in?
Tools:Browsers:Plug-in, Java:API:Applets:Browsers:Plug-in, JavaScript:Integration:Java
Jonathan Perez, Nov 27, 2001
The second section of Chapter 25 of the Java Plug-In developer guide: Java-to-JavaScript Communication has a code snippet.

Can I redistribute Sun's "javac" Java source code compiler with my product?
Java:Language, Tools
John Mitchell PREMIUM, Nov 23, 2001
Yes, as of October 17th, 2001, it is now permissible to redistribute the javac compiler according to Sun's updated Binary Code License Agreement. See...

How can I run Java applets in Windows XP?
Tools:Browsers:Plug-in, Java:API:Applets:Browsers:Plug-in
John Zukowski PREMIUM, Nov 7, 2001
Sun offers the Java Plug-in for free via their Get Java program at http://java.sun.com/getjava/download.html.

How do I disable the Java 1.4 Plug-In to use the original, underlying Microsoft VM?
Tools:Browsers:Plug-in, Java:API:Applets:Browsers:Plug-in
John Zukowski PREMIUM, Nov 5, 2001
Under the Tools menu, select the Internet Options option. Then select the Advanced tab. You'll need to scroll down about half way until you see the little...

Are there any Java-based programming text editors available?
Tools:Editors
Govind Seshadri PREMIUM, Oct 30, 2001
jEdit is a programmer's text editor written in Java. It uses the Swing toolkit for the GUI and can be configured as a rather powerful IDE through the use...

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