MethodOverload.java

public class MethodOverload {
    // Demonstrate method overloading.
    void ovlDemo() {
        System.out.println("No parameters");
    }

    // Overload ovlDemo for one integer parameter.
    void ovlDemo(int a) {
        System.out.println("One parameter: " + a);
    }

    // Overload ovlDemo for two integer parameters.
    int ovlDemo(int a, int b) {
        System.out.println("Two parameters: " + a + " " + b);
        return a + b;
    }

    // Overload ovlDemo for two double parameters.
    double ovlDemo(double a, double b) {
        System.out.println("Two double parameters: " + a + " " + b);
        return a + b;
    }
}

class OverloadDemo {
    public static void main(String[] args) {
        var ob = new MethodOverload();
        int resI;
        double resD;

        // Call all versions of ovlDemo().
        ob.ovlDemo();
        System.out.println();
        ob.ovlDemo(2);
        System.out.println();
        resI = ob.ovlDemo(4, 6);
        System.out.println("Result of ob.ovlDemo(4, 6): " + resI);
        System.out.println();
        resD = ob.ovlDemo(1.1, 2.32);
        System.out.println("Result of ob.ovlDemo(1.1, 2.32): " + resD);
    }
}