JDK 6 Collections-related APIs & Developer Guides |Java 6.0 Collection Framework

Java 6.0 New Collection APIs an Overview
The following are the new collection APIs introduced in Java 6.0. I listes them as Interfaces and classes.
New Interfaces

• Deque
• BlockingDeque
• NavigableSet
• NavigableMap

New Classes

• ArrayDeque
• LinkedBlockingDeque
• ConcurrentSkipListSet
• ConcurrentSkipListMap
• AbstractMap.SimpleEntry
• AbstractMap.SimpleImmutableEntry

Updated Classes in Java 6.0

• LinkedList
• TreeSet
• TreeMap
• Collections