You may find help here, but http://www.javajunkies.org/ would be a more appropriate site for this question.

http://www.javajunkies.org/

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SCNR

But not necessarily experienced Java programmers :)

Phil

If you are looking to get up to date with the new bits added with java 1.5 then I recommend Java 5.0 Tiger: A Developer's Notebook. Java 1.6 is in beta currently so I'm sure there will be something comparable coming out soon - it looks like a nice release.

For J2EE work you might take a look at Enterprise JavaBeans 3.0, 5th Edition. Working with EJB used to make grown men cry, but with version 3.0 they are actually quite reasonable to work with. The book is very chatty and takes awhile to go through, but there is also a lot of content.

I picked up Java Reflection in Action recently and have found it very useful. In the past I considered reflection in java tedious, inefficient, and indicative of a design problem in my application. The performance issues have been addressed for the most part, and reflection has matured - particularly relating to annotations (a java 1.5 feature).

For threading I have heard good things about Java Concurrency in Practice, but haven't had a chance to read it yet.

The best beginner's book I've come across is http://horstmann.com/corejava.html . If you're a little bit experienced at programming in another language or two, you might instead go for the Nutshell book by Flanagan. Look at both of them to get a feel for which you prefer.

If you need to learn some Java for whatever reasons (even if it's to realize that Perl is really much better!), you could try Core Java, Kathy Sierra's books or The Java Tutorial.

I hope that helps.