Prime Number:-
Prime Number :WAP to check prime numbers.
Code:-
/*
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* To change this template file, choose Tools | Templates
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*/
package javaapplication40;
import java.util.Scanner;
/**
*
* @author Dell
*/
public class JavaApplication40 {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
int i , n , res;
Scanner sc = new Scanner(System.in);
System.out.println(” Enter a no”);
n = sc.nextInt();
for(i= 2;i<=n/2;i++)
{
if (n % i == 0)
{
System.out.println(” The number is prime”);
}
else
{
System.out.println(” The number is not prime”);
}
}
}
}
Note:-
This program is written and compiled in Netbeans 8.0.
Explanation :-
This program is used to check whether the entered number is prime or no.
This program uses a single for loop.
This program divides the entered number from all its previous number upto 1.
If that number gets divided by other numbers except 1 and itself then it is not a prime number.
Otherwise that number falls in the category of prime numbers.
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