Java Program to check whether a number is Prime Or Composite

This is a basic program in Java which checks whether the number is prime number or composite number.

PROGRAM :

 package codingcorner.in;

import java.util.Scanner;

public class PrimrOrComposite {
 public static void main(String[] args) {
  int a, b;
  Scanner scan = new Scanner(System.in);
  
  System.out.println("Enter a number to check Prime or Composite ");
  b = scan.nextInt();
  
  scan.close();
  
  if (b == 0 || b == 1)
   System.out.println(b +" is neither Prime nor Composite" );

  for (a = 2; a <= b - 1; a++) {
   if (b % a == 0) {
    System.out.println(b +"  is Composite number" );
    break;
   }
  }
  if (b == a)
   System.out.println(b +"  is Prime number " );
  
 }
}

OUTPUT :