IDEs for Java

the available Opensource IDEs for developing java applications are

1. Netbeans
Netbeans latest version[6.8] can downloaded from http://netbeans.org/downloads/index.html

2. Eclipse

eclipse Ganymede, Europa and Galileo
these Ganymede, Europa and Galileo are version of Eclipse IDE.

Eclipse can be downloaded from http://www.eclipse.org/downloads/