package oopsconcepts;

class OuterClass {

private static String msg = "Hello Java";

// Static nested class

public static class NestedStaticClass {

// Only static members of Outer class is directly accessible in nested static class

public void printMessage() {

System.out.println("Message from nested static class: " + msg);

}

}

// non-static nested class - also called Inner class

public class InnerClass {

// Both static and non-static members of Outer class are accessible in this Inner class

public void display() {

System.out.println("Message from non-static nested class: " + msg);

}

}

}

public class StaticClass {

public static void main(String[] args) {

OuterClass.NestedStaticClass printer = new OuterClass.NestedStaticClass();

printer.printMessage();

OuterClass outer = new OuterClass();

OuterClass.InnerClass inner = outer.new InnerClass();

inner.display();

OuterClass.InnerClass innerObject = new OuterClass().new InnerClass();

innerObject.display();

}

}