program to check number is composite or prime number in java.

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 import java.util.Scanner;

class CheckNo {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

     System.out.print("enter the number=");

      int n=sc.nextInt();

      boolean flag=false;

        for(int i=2; i<=n-1; i++){

            if(n%i==0){

            System.out.println("composite no.");

            flag=true;

            break;

            }

        }

        if(n==1 || n==0) System.out.println("neither composite nor prime");

        if(flag==false) System.out.println("prime number.");

    }

}


output ->

               enter the number=24

                composite no.

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