At the base of the Framework are the interfaces java.util.Collection and java.util.Map. The Collection interface represents just a group of objects, with no particular order or restriction.

The Java Collections Framework (JCF), introduced in 1998 in JDK 1.2, is quickly becoming the standard for storing dynamic data in Java systems. Many new APIs use JCF’s container interfaces to ...

With the sequenced collections proposal, all of the new methods declared in the new interfaces have default implementations. Sequenced collections would be added to the standard edition of Java.

The Java Iterator is accessible to all Collection classes, but the ListIterator is confined only to classes that implement the List interface. Java Collections Framework However, classes in the Java ...