Handling memory leaks in Java

Good explanation of handling memory leaks in Java using a practical scenario.
http://www-128.ibm.com/developerworks/java/library/j-leaks/#resources

Memory leaks in Java

http://www-128.ibm.com/developerworks/java/library/j-leaks/#resources

Troubleshooting Memory Leaks

http://java.sun.com/javase/6/webnotes/trouble/TSG-VM/html/memleaks.html