It defines group of classes and interfaces which can be used for representing a collection of Objects as single entity.
9 key Interfaces of collection framework
- This interface is the root interface for entire collection framework.
- This interface can be used for representing a group of objects as single entity.
- This interface defines the most common general methods which can be applicable for any collection object.
- There is no concrete class which implements collection interface directly.you can refer to this Collection interface API
Note:Vector and Stack classes are re engineered in 1.2v to fit into new collection framework by implementing List interface.