Friday, 15 January 2016

Java Tutorial : Java Nested Interface(Inside Interface)

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Java Tutorial : Java Nested Interface(Inside Interface)
public interface OuterInterface
    void outerMethod();     
    public interface NestedInterface
        void nestedMethod();
 * As you can see in the below example, we are accessing the 
 * NestedInterface by its OuterInterface because 
 * it cannot be accessed directly. 
 * It is just like apple inside the box, we cannot access the apple directly 
 * because we must open the box first. 
 * In collection framework has provided a nested interface 
 * Entry. Entry is the sub-interface of Map i.e. accessed by Map.Entry.

public class MyClass implements OuterInterface.NestedInterface

    public void nestedMethod()
        System.out.println("Nested Method has been called.");


public class InterfaceTest

    public static void main(String[] args)
        OuterInterface.NestedInterface nestedInterfaceRef = new MyClass();

Nested Method has been called.
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See also:
  • All JavaEE Viedos Playlist
  • All JavaEE Viedos
  • All JAVA EE Links
  • Servlets Tutorial
  • All Design Patterns Links
  • JDBC Tutorial
  • Java Collection Framework Tutorial
  • JAVA Tutorial
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