Collections Framework

The Collections Framework has been enhanced in the following ways:

• Three new language features are targeted at collections: Generics, Enhanced for Loop, and Autoboxing.

• Three new interfaces have been added to the framework (two of which are part of java.util.concurrent): Queue, BlockingQueue, and ConcurrentMap.

• Two concrete implementations of Queue have been added, as well as one skeletal implementation.

• Five blocking queue implementations have been added, and one ConcurrentMap implementation.

• Special-purpose Map and Set implementations are provided for use with typesafe enums.

• Special-purpose copy-on-write List and Set implementations have been added.

• Wrapper implementations are provided to add dynamic type-safety for most collection interfaces.

• Several new algorithms are provided for manipulating collections.

• Methods are provided to compute hash codes and string representations for arrays.

Refer to the documentation at http://java.sun.com/j2se/1.5.0/docs/guide/collections/index.html.