In this program, we will create 3 methods with the same name but all methods have a different number of arguments to calculate the sum of given arguments.

Program/Source Code:

The source code to implement method overloading based on the number of arguments is given below. The given program is compiled and executed successfully.

// Java program to implement method overloading 
// based on the number of arguments

public class Main {
  static int sum(int a, int b) {
    int s = 0;

    s = a + b;

    return s;
  }

  static int sum(int a, int b, int c) {
    int s = 0;

    s = a + b + c;
    return s;
  }

  static int sum(int a, int b, int c, int d) {
    int s = 0;

    s = a + b + c + d;
    return s;
  }

  public static void main(String[] args) {
    int result = 0;

    result = sum(10, 20);
    System.out.println("Sum : " + result);

    result = sum(10, 20, 30);
    System.out.println("Sum : " + result);

    result = sum(10, 20, 30, 40);
    System.out.println("Sum : " + result);
  }
}

Output:

Sum : 30
Sum : 60
Sum : 100

Explanation:

In the above program, we created a Main class that contains a method main() and 3 overloaded method sum() to calculate the addition of a specified different number of arguments.

The main() method is the entry point for the program, here we called overloaded methods and printed the result.