Java Program to Check Whether a Number is Even or Odd
Example 1: Check whether a number is even or odd using if…else statement
import java.util.Scanner;
public class EvenOdd {
public static void main(String[] args) {
Scanner reader = new Scanner(System.in);
System.out.print("Enter a number: ");
int num = reader.nextInt();
if(num % 2 == 0)
System.out.println(num + " is even");
else
System.out.println(num + " is odd");
}
}
When you run the program, the output will be:
Enter a number: 12 12 is even
In the above program, a Scanner
object, reader
is created to read a number from the user’s keyboard. The entered number is then stored in a variable num.
Now, to check whether num is even or odd, we calculate its remainder using %
operator and check if it is divisible by 2
or not.
For this, we use if...else
statement in Java. If num is divisible by 2
, we print num is even. Else, we print num is odd.
We can also check if num is even or odd by using ternary operator in Java.
Example 2: Check whether a number is even or odd using ternary operator
import java.util.Scanner;
public class EvenOdd {
public static void main(String[] args) {
Scanner reader = new Scanner(System.in);
System.out.print("Enter a number: ");
int num = reader.nextInt();
String evenOdd = (num % 2 == 0) ? "even" : "odd";
System.out.println(num + " is " + evenOdd);
}
}
When you run the program, the output will be:
Enter a number: 13 13 is odd
In the above program, we’ve replaced if...else
statement with ternary operator (? :)
.
Here, if num is divisible by 2, "even"
is returned. Else, "odd"
is returned. The returned value is saved in a string variable evenOdd.
Then, the result is printed on the screen using string concatenation.