Let’s learn java bitwise AND to check a given number is odd or even.

## Java bitwise AND to check a given number is odd or even

Java program to check given number is even or odd by using AND (&) operator is one of the common interview question.

In this post we are going to learn to find number even odd using bitwise operator in java.

Also read – even odd program in java without using scanner

Basically to check if number is even we divide it by 2 and its remainder will be 0.

Meanwhile to check if number is odd its remainder will be 1 when divided by 2.

Bitwise AND (&) operator returns bit by bit of input values in binary representation. Here we have to check right most significant bit.

If the right most significant bit is 1 then it is odd number else it is even number.

Also integer numbers are represented as 2’s complement.

Also read – even odd program in java using method

For even number it has 0 as there Least Significant Bit (LSB).

Here’s java program to check whether the given number is even or odd using (&) operator.

import java.util.Scanner; public class EvenOddBitwise { public static void main(String[] args) { Scanner sc = new Scanner(System.in); System.out.print("Please enter a number: "); int number = sc.nextInt(); if((number & 1) == 0) { System.out.println(number + " is an even number."); } else { System.out.println(number + " is an odd number."); } sc.close(); } }

**Output:**

Please enter a number: 56

56 is an even number.

Meanwhile we can also check a given number is even or odd using division operator ( / ).

Here division operator basically returns quotient.

For example, if we take a number and divide by two and multiply result with 2 then the number will be less in case of odd number and equal in case of even number.

int result = number / 2; if(result * 2 == number) { System.out.println("Even number"); }

**find number even odd using bitwise xor operator in java**

Here’s example. Meanwhile learn bitwise operator in java.

public class UsingBitwiseOperator { static boolean checkEven(int number) { if((number ^ 1) == number + 1) return true; else return false; } public static void main(String[] args) { int num = 54; System.out.println(checkEven(num) == true ? "Even" : "Odd"); } }

**Output:**

Even

public class UsingBitwiseOperator { static boolean checkEven(int number) { if((number ^ 1) == number + 1) return true; else return false; } public static void main(String[] args) { int num = 51; System.out.println(checkEven(num) == true ? "Even" : "Odd"); } }

**Output:**

Odd