Ugly Number Calculation Algorithm

package javaapplication1;
/**
 ** @author sachika
 */
public class Main {

    public static void main(String[] args) {

    Main mainObj = new Main();
    int no = mainObj.getNthUglyNo(11);
    System.out.print(no);
    try{
    System.in.read();
    }
    catch(Exception s) {}
    
    }

int maxDivide(int a, int b)
{
  while (a%b == 0)
   a = a/b;
  return a;
}

boolean isUgly(int no)
{
  no = maxDivide(no, 2);
  no = maxDivide(no, 3);
  no = maxDivide(no, 5);

  return (no == 1)? true : false;
}

int getNthUglyNo(int n)
{
  int i = 1;
  int count = 1;   /* ugly number count */

  /*Check for all integers untill ugly count
    becomes n*/
  while (n > count)
  {
    i++;
    if (isUgly(i))
      count++;
  }
  return i;
}

}