View Source Code of JAR File

In Eclipse

1. Attach Source Code

get a JAR file containing source code.

If double-click Class file, one can see a button of attach source.

or If right-click JAR file, Properties > Java Source Attachment > select Source JAR file.

2. Use JAD Decompiler

http://jadclipse.sourceforge.net/wiki/index.php/Main_Page

3. Use Maven when a project is using Maven and m2eclipse

Right-click a JAR file, Maven > Download Sources

Reference

http://blog.nya.pe.kr/45

cannot load 32 bit SWT libraries on 64 bit JVM

on eclipse, MacOSX Snow Leopard

error message : cannot load 32 bit SWT libraries on 64 bit JVM

I changed java preferences using GUI. The preferred order of java is that first 32-bit, second 64-bit. However it doesn't take effect.

I googled and found the easy solution.

The JVM argument is given "-d32". If you'd like to run 64 bit JVM, give "-d64".

reference

http://technophi.com/2010/03/22/cannot-load-32-bit-swt-libraries-on-64-bit-jvm/

http://www.eclipse.org/swt/faq.php#cocoa32launch

Problems with Eclipse buttons in Ubuntu 9.10

export GDK_NATIVE_WINDOWS=true

org.eclipse.swt.SWTError: XPCOM error -2147467262

if you get this problem

org.eclipse.swt.SWTError: XPCOM error -2147467262

edit the file of eclipse.ini

add the following

-Dorg.eclipse.swt.browser.XULRunnerPath=/dev/null

or

-Dorg.eclipse.swt.browser.XULRunnerPath=/usr/lib/xulrunner

http://ohioloco.ubuntuforums.org/showthread.php?t=1273380

How to fix eclipse "resource is out of sync with the file system"

If you edit a workbench resource outside of Eclipse, this problem occurs.

To fix the problem, refresh the project.