What books should be on the bookshelf of EVERY Java programmer, no matter what specific technologies they are working on?

The two that come to my mind are

Thinking in Java
Java Concurrency in Practice

What else am I missing?

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Will add one more to my list:

Effective Java
"Thinking in Java" would have been on my list. I'll have to take a look at "Effective Java".

Java Books

Beginner:

  • Head First Java, 2nd Edition
  • Thinking in Java (4th Edition)
  • Think Java
  • Introduction to Java by Sedgewick
  • Java in a Nutshell
  • Core Java Volume I--Fundamentals (9th Edition) (Core Series): Cay S. Horstmann
  • Java How To Program (late objects) by Paul Deitel, Harvey Deitel

Intermediate:

  • Effective Java (2nd Edition): Joshua Bloch
  • Java Performance: Charlie Hunt, Binu John
  • Head First Servlets and JSP
  • SCJP by Kathy and Sierra
  • Java - The Complete Reference by Herbert Schildt.
  • Java Concurrency in Practice
  • Java Performance
  • The Java Programming Language, 4th Edition

Advanced:

  • Java Puzzlers : Traps, Pitfalls, And Corner Cases

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