1: Java classes and class loading

http://www.ibm.com/developerworks/java/library/j-dyn0429/

http://www.ibm.com/developerworks/java/tutorials/j-classloader/j-classloader.html

https://www.ibm.com/developerworks/community/wikis/home?lang=en#!/wiki/Wcb729b1dc954_458d_bdc2_06a5c3fd75a5

https://www.ibm.com/developerworks/library/ws-javaclass/

Demystifying class loading problems, Part            1: An introduction to class loading and debugging tools

Demystifying class loading problems, Part            2: Basic class loading exceptions

Demystifying class loading problems, Part            3: Tackling more unusual class loading problems

Demystifying class loading problems, Part            4: Deadlocks and constraints

Java classes and class loading