Java/Language Basics/Modulus

Detect even/odd number with the modulus operator.

 
public class Main {
  public static void main(String[] argv) {
    int x = 5;
    if (x % 2 == 0) {
      System.out.println("even");
    }
    if (x % 2 != 0) {
      System.out.println("odd");
    }
    // ... or binary AND operator...
    if ((x & 1) == 0) {
      System.out.println("even");
    }
    if ((x & 1) != 0) {
      System.out.println("odd");
    }
  }
}

Modulus Operator Example

 

public class Main {
  public static void main(String[] args) {
    int i = 5;
    double d = 2;
    System.out.println("i mod 10 = " + i % 10);
    System.out.println("d mod 10 = " + d % 10);
  }
}
/*
i mod 10 = 5
d mod 10 = 2.0
*/