JAVA EXAMPLE PROGRAMS

JAVA EXAMPLE PROGRAMS

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Program: How to initialise non-static member (local class) class?


Description:
You can create an instance for non-static member class by creating
instance for top level class.

Code:
package com.java2novice.nested.classes;

public class MyNonStaticMemberClassInstance {

	public static void main(String a[]){
		ParentClass pc = new ParentClass();
		ParentClass.ChildClass cc = pc.getInnerInstance();
		cc.myMethod();
		ParentClass.ChildClass cc1 = pc.new ChildClass();
		cc1.myMethod();
	}
}

class ParentClass{
	
	public class ChildClass{
		
		public void myMethod(){
			System.out.println("Hey you have called me!!!");
		}
	}
	
	public ChildClass getInnerInstance(){
		return this.new ChildClass();
	}
}

Output:
Hey you have called me!!!
Hey you have called me!!!
<< Previous Program 

Java Nested Classes Sample Code Examples

  1. How to initialise or call a static member class?
  2. How to implement a static member interface?
  3. How to access top level class variables from static member classes?
  4. Give an example of basic non-static member class.
  5. How to initialise non-static member (local class) class?
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Knowledge Centre
Default value of a local variables?
The local variables are not initialized to any default values. We should not use local variables with out initialization. Even the java compiler throws error.
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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