public class VoidMethodExample {

    // Method to print a message

    public void printMessage() {

        System.out.println("Hello, World!");

    }

​

    public static void main(String[] args) {

        VoidMethodExample example = new VoidMethodExample();

        example.printMessage();  // Call the void method

    }

}

public class ReturnMethodExample {

    // Method to return the square of a number

    public int square(int x) {

        return x * x;

    }

​

    public static void main(String[] args) {

        ReturnMethodExample example = new ReturnMethodExample();

        int result = example.square(5);  // Call the method and store the result

        System.out.println("Square of 5: " + result);

    }

}