static void display(int num1) { System.out.println(num1); }

    static void display(int num1, int num2) { System.out.println(num1 * num2); }

    static void display(int num1, double num2) { System.out.println(num1 + num2); }

}

​

public class prog {

    public static void main(String[] args) {

        Test myfunc = new Test();

        myfunc.display(10);

        myfunc.display(10, 20);

        myfunc.display(10, 3.14);

        myfunc.display(10, 'a');

    }

}