Hi Friend,

Try the following code:

import java.util.*;
class PrimeNumbers{
public static void main (String args[]){
System.out.println("Enter the start range:");
Scanner input=new Scanner(System.in);
int num1=input.nextInt();
System.out.println("Enter the end range:");
int num2=input.nextInt();
String primeNo = "";
int counter = 0;
System.out.println("Prime Numbers between "+num1+" and "+num2+" are:" );
for (int i = 5; i < 20; i++){ {
int j;
for (j = 2; j < i; j++)
{
if (i % j == 0) {
break;
}
}
if (i == j) {
primeNo += i + " ";

}
}
}
System.out.println(primeNo);
}
}
Thanks