// Demo class which the super class

Demo.java

package com.source;

public class Demo {
// variables that belongs to the class	
	private int a;
	public int b;
	protected int c;
	int d;
	
/*  no arguement constructor*/
	public Demo() {                         
	System.out.println("This is a public demo constructor");    
	}
	
/*  one arguement constructor which is private */
	private Demo( String one ){

		System.out.println("This is a private one argument demo constructor");
	}
	
	
          private void method(){
		System.out.println("This is a private method");
	}

	public  void method1(){
		System.out.println("This is a public method1");
	}

	protected  void method2(){
		System.out.println("This is a protected method2");
	}

	void method3(){
		System.out.println("This is a defualt method");
	}
	
	//  Inner classes inside Demo class
	
public static class PublicStaticInnerClassOfDemo{
		
          public void InnerMethod(){
System.out.println("public static class *Hi I am inside an innerMethod which is public");
		}
		
         public static void staticInnerMethod(){
System.out.println("public static class *Hi I am inside an innerMethod which is public static  ");
		}
		
        private static void staticInnerMethodPrivate(){
System.out.println("public static class *Hi I am inside an innerMethod which is private  static ");
		}

     protected static void staticInnerMethodProtected(){

   System.out.println("public static class *Hi I am inside an innerMethod which is protected        static");
		}
		
static void staticInnerMethodDefault(){
System.out.println("public static class *Hi I am inside an innerMethod which is default  static ");
		}
	}
	
     protected class ProtectedInnerClassOfDemo{
		
public void InnerMethodPublic(){

System.out.println("ProtectedInnerClassOfDemo *Hi I am inside an innerMethod which is public");
		}

		
private  void InnerMethodPrivate(){
System.out.println("ProtectedInnerClassOfDemo *Hi I am inside an innerMethod which is private   ");
		}
		
protected  void InnerMethodProtected(){
System.out.println("ProtectedInnerClassOfDemo *Hi I am inside an innerMethod which is protected   ");

		}
		
void InnerMethodDefault(){
System.out.println("ProtectedInnerClassOfDemo *Hi I am inside an innerMethod which is default   ");

		}
	}
	

	 class DefaultInnerClassOfDemo{

public void InnerMethodPublic(){
System.out.println("DefaultInnerClassOfDemo *Hi I am inside an innerMethod which is public");
		}
		
private  void InnerMethodPrivate(){
System.out.println("DefaultInnerClassOfDemo *Hi I am inside an innerMethod which is private   ");
		}
		

protected  void InnerMethodProtected(){
System.out.println("DefaultInnerClassOfDemo *Hi I am inside an innerMethod which is protected   ");

		}
		

void InnerMethodDefault(){
System.out.println("DefaultInnerClassOfDemo *Hi I am inside an innerMethod which is default   ");

		}
	}
	

	private class PrivateInnerClassOfDemo{

		// you can't extend private inner class of Demo
	}
	

   public  class PublicInnerClassOfDemo{
		
	   /*The method innerMethod1 cannot be declared 
	   static; static methods can only be declared in a 
	   static or top level type*/
	//   public static void innerMethod1(){}
		
public void InnerMethodPublic(){
System.out.println("PublicInnerClassOfDemo *Hi I am inside an innerMethod which is public");

		}
	
private  void InnerMethodPrivate(){
System.out.println("PublicInnerClassOfDemo *Hi I am inside an innerMethod which is private   ");

		}
		
protected  void InnerMethodProtected(){
System.out.println("PublicInnerClassOfDemo *Hi I am inside an innerMethod which is protected   ");

		}
		
 void InnerMethodDefault(){
System.out.println("PublicInnerClassOfDemo *Hi I am inside an innerMethod which is default   ");

		}	
	}

}