A natural number that is greater than 1 , divided by 1 and itself is called prime number. In this tutorial, we are going to write a program to identify given number is prime or not.
import java.util.Scanner;
public class PrimeNumber {
public boolean isPrimeNumber(int number){
if (number == 0 || number==1)
{
return false ;
}
if (number == 2)
{
return true ;
}
for(int i=2; i<=number/i; i++){
if(number % i == 0){
return false;
}
}
return true;
}
public static void main(String args[]){
PrimeNumber primenumber = new PrimeNumber();
System.out.print("Please Enter Number: ");
Scanner read = new Scanner(System.in);
int number = read.nextInt();
System.out.println("Is "+number+" prime number : " +primenumber.isPrimeNumber(number));
}
}