Introduction

In this demo I have used NetBeans IDE 8.2 for debugging purpose. But you can use any java programming language compiler as per your availability..

import java.util.*;
  public class Javamathexcercise {
 
  public static void main(String[] args) {
 
  int total_therotical_marks = 450, total_practical_marks = 90, total_marks = 600;
  int percentage_of_marks = ((total_therotical_marks + total_practical_marks)*100)/total_marks; 
 
  System.out.print("\nPercentage of Marks: "+percentage_of_marks+"%\n");
 
  }
}

Result