You can get commertial implementatios of Netbeans in the SunOne Studio version. wwws.sun.com/software/sundev/jde
If these last two you can download trials.
For learning purposes (not for production) you can get for free a complete implementation of the [JDeveloper], which by chance is my favorite. The 10g Version is great. [url]www.oracle.com/technology/products/jdev[/b]
Another excellent choice is IntelliJ IDEA [url]http://www.intellij.com/idea[/b]
Hope it helps!
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