Part II contains examples that demonstrate basic Java functionality and essential Java APIs. These examples correspond to the portion of Java that is covered in Java in a Nutshell.
Chapter 3, Input/Output
Chapter 4, Threads
Chapter 5, Networking
Chapter 6, New I/O
Chapter 7, Security and Cryptography
Chapter 8, Internationalization
Chapter 9, Reflection
Chapter 10, Object Serialization