PE #7, Java - rextester

PE #7

//Title of this code
//'main' method must be in a class 'Rextester'.
//Compiler version 1.8.0_45

import java.util.*;
import java.lang.*;

class Rextester
{  
    public static void main(String args[])
    {
        int count = 4; 
        for(int i=10; i<170000; i++)   {
         
            if (isPrime(i)==true) { count++; 
                                   System.out.print("("+count+", "+i+") "); 
                                   //System.out.println("count up, "+count+", i: "+i); 
                                  } 
            //if ((count == 10001)&&(isPrime(i)==true)) { System.out.println("count: "+count+", i: "+i); }
        }
        
      //  System.out.println("count: "+count);
         
    }
    
    public static boolean isPrime(int num) { 
     
        int sqrnum = (int) Math.sqrt(num); 
        boolean ans = true;
        
        if (num%2==0) { return false; } 
        if (num%5==0) { return false; } 
        if (num%3==0) { return false; }
        
        for (int i=3; i< sqrnum+1; i++) { 
            if (num%i == 0) {ans = false; }
        }
       return ans;  
    }
}


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