Write a program in Java to check prime numbers.
How the prime number is defined?
A prime number is a positive integer that is divisible only by 1 and itself. Any number that does not satisfy this condition is called a Non-prime number.
example for prime:- 2, 3, 5, 7, 11, 13, 17.
Video tutorial for Program to check Prime numbers
Program to check Prime numbers
import java.util.*; //importing Scanner class
public class vtuupdates
{
public static void main (String args[])
{
int flag=0;
Scanner sc=new Scanner(System.in); // Creat a Scanner Class
System.out.print("Enter the number to Check Prime or Not Prime : ");
int a=sc.nextInt(); // input number
if(a==1 || a==0){
flag=1;
}
else{
for(int i=2; i<=a/2; i++){
if(a%i==0){
flag=1;
break;
}
}
}
if(flag == 1){
System.out.println(a+" is Not Prime");
}
else{
System.out.println(a+ " is a Prime");
}
}
}