Where to go now/Which IDE to learn

I have learned the Java Language; introduced to AWT, Swing, and File I/0. I want to be able to build Enterprise database applications/applets. What do I learn next? I am thinking maybe JBDC. Should I use J2EE to learn JBDC?
Also, which IDE should I learn: JBuilder, JDeveloper or Forte? I will be using the free version of the IDE.
I am planning on getting my Java Programming certification, but I am on the bench, so I need to upgrade my skills quickly.
Sheila

Java IDE's are designed to improve your productivity by providing useful tools such as syntax highlighting and checking, auto-completion, etc.
I would be severly dubious of employing a developer who refused to use an IDE and insisted on using a simple text editor.
There are many IDE's available freely and my advice would be to try a few of the better ones and see which suits you best.
Personally I am currently swapping between IntelliJ (don't know if it's free but we have licences here at work) and Eclipse. In the past I've also used JBuilder and MS VisualJ.
Go with what suits you best.

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