prime.java

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/**
 *
 * @author g1.test1
 */
import java.io.*;
public class prime {
 public static void main(String args[])throws Exception
 {BufferedReader i=new BufferedReader(new InputStreamReader(System.in));
 System.out.println("enter the number");
 int a=Integer.parseInt(i.readLine());
 int m=a;
 int c=0;
 for(int j=1;j<=a;j++)
 {if(m%j==0)
 c=c+1;

 }
 if(c==2)
 {System.out.println(m+" is "+"a prime number");
 }
 else
 System.out.println(m+" is "+"not a prime number");
 }
}