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?
Knowledge Centre
String Vs StringBuffer
We know that String is immutable object. We can not change the value of a String object once it is initiated. If we try to change the value of the existing String object then it creates new object rather than changing the value of the existing object. So incase, we are going to do more modificatios on String, then use StringBuffer. StringBuffer updates the existing objects value, rather creating new object.
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-- William Arthur Ward

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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