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Java program to implement method overloading based on type promotion

// Java program to implement method overloading 
// based on type promotion

public class Main {
  static double sum(int num1, int num2) {
    double s = 0;
    s = num1 + num2;
    return s;
  }
  
  static double sum(int num1, double num2) {
    double s = 0;
    s = num1 + num2;
    return s;
  }

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

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

    result = sum(20, 20.56F);
    System.out.println("Sum : " + result);
  }
}

Output

Sum : 30.0
Sum : 40.55999946594238