Java Nested Interface

Chapter: Miscellaneous Last Updated: 25-03-2017 06:12:00 UTC

Program:

            /* ............... START ............... */
                
// Nested Interface declared within the Interface
public interface OuterInterface 
{
    //OuterInterface method declarations 
    interface NestedInterface
    {
        //NestedInterface method declarations
    }
}

//Nested Interface declared within the class

public class OuterClass 
{
    //OuterClass method and variables
    interface NestedInterface
    {
        //NestedInterface method declarations
    }
}
                /* ............... END ............... */
        

Notes:

  • Java programming allows you to declare an Interface within another Interface or Class. Such type of Interfaces are called Nested or Inner Interface.
  • The Nested Interface must be referred by the outer Interface or class.
  • Nested Interface cannot be accessed directly.
  • Nested interface must be public if it is declared inside the interface but it can have any access modifier if declared within the class.
  • Nested interfaces are declared static implicitely.

Tags

Nested Interface, Miscellaneous, Java

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