Fresher... Need Help

Hi Group,
I am fresher in java working for last 3 months on it. Can anyone let me know any site or book or CD available through which i can increase my knowledge e.g site or book or CD should have questions like Diff. between Abstract and Interface..., final and abstract.....
Thanks in advance..
R S

Reources for Beginners
http://java.sun.com/docs/books/tutorial/
http://java.sun.com/learning/new2java/index.html
http://javaalmanac.com
http://www.jguru.com
http://www.javaranch.com
Bruce Eckel's Thinking in Java
Joshua Bloch's Effective Java
Bert Bates and Kathy Sierra's Head First Java

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    |       |                                |
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    |       |                                |
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    |       |                                |
    |       |                                |
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    |       |                                |
    |       |                                |
    |       |                                |
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    |                                    .   |b
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