Cast to interface reference and the class refernece that implementing the interface.is it possible?

[Slaxmi Raj]

Can any one please explain the below statement with example(Not getting to my knowledge because i am the beginner).

A reference variable can be declared as a class type or an interface type. If
the variable is declared as an interface type, it can reference any object of any
class that implements the interface.

[Winston Gutkowski]

Slaxmi Raj wrote:Can any one please explain the below statement with example(Not getting to my knowledge because i am the beginner)...

List<String> = new ArrayList<String>();

Winston

[Campbell Ritchie]

The raw type version might be easier to visualise.

//Best done with a JDK1.4 runtime
List list = new ArrayList();