Hyde, Paul. Core Java 2, Volume II: Advanced Features (5th Edition) . Indianapolis, IN: Pearson Hall, 2001 (ISBN 0130927384). A strong section on threads.
http://java.sun.com/docs/books/tutorial/essential/threads ”Here you can read the Java tutorial section that addresses threads.
http://javaalmanac.com/egs/java.lang/BasicThread.html ”This page offers several clear code examples that demonstrate how to use threads.
Hyde, Paul. 
http://java.sun.com/docs/books/tutorial/essential/threads ”Here you can read the Java tutorial section that addresses threads. 