Java Arithmetic Operators Modulus Operator

Introduction

Java modulus operator, %, returns the remainder of a division operation.

It can be applied to floating-point types as well as integer types.

The following example program demonstrates the %: 

// Demonstrate the % operator.
public class Main {
  public static void main(String args[]) {
    int x = 42;//from w  w w.  ja  v  a  2  s.  co m
    double y = 42.25;

    System.out.println("x mod 10 = " + x % 10);
    System.out.println("y mod 10 = " + y % 10);
  }
}

import java.util.Scanner;

public class Main {

  public static void main(String[] args) {

    Scanner input = new Scanner(System.in);
    System.out.println("Enter pairs of integers or enter to exit:");
    while (input.hasNext()) {
      int num1 = input.nextInt();
      int num2 = input.nextInt();
      boolean multiple = isMultiple(num1, num2);
      System.out.println(multiple);
    }/*from w w  w  . ja va 2 s.c  o m*/
  }

  private static boolean isMultiple(int num1, int num2) {
    if (num2 % num1 == 0)
      return true;
    else
      return false;
  }
}

The following code check if input is an even number. 



public class Main
{
  
  public static void main( String[] args )
  {//from ww  w.  j a  v a 2  s  . co  m
    java.util.Scanner input = new java.util.Scanner( System.in );
    
    System.out.print( "Enter to number: " );
    int number = input.nextInt();
    
    System.out.printf( "The number is Even? %s%n", isEven( number ) );
  }
  
  public static boolean isEven( int number )
  {
    return number % 2 == 0;
  }
  
}



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