Java Anonymous inner class

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An inner class that has no class name which is called an anonymous inner class. It is generally used whether you need to override the method of a class or an interface.

Syntax:

 AnonymousInner ai = new AnonymousInner(){
   public void Method_Name() {
      ........
      ........
   }   
};

Example

To override the method of a class using anonymous inner class.

 abstract class Calculate{  
	abstract void Result(); 
    int a=5,b=6,c; 
}  
public class AnonymousInnerClass{  
	public static void main(String args[]){  
		Calculate ca=new Calculate() {  
			void Result(){
			    c=a+b;
            	System.out.println("The result is "+c);
            }  
		};  
  ca.Result();  
 }  
}
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Example

The anonymous inner class using interface.

interface Calculate{  
	void Result(); 
}  
public class AnonymousInnerClassinterface{  
	public static void main(String args[]){  
		Calculate ca=new Calculate() {  
			public void Result(){
            	System.out.println("The anonymous inner class using interface");
            }  
		};  
  ca.Result();  
 }  
}
Run ›
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