---

Comma.java

package gov.nasa.arc.ase.util;

public class Comma {
  // Comma
  //
  // Formats a number with a comma to separate thousands, millions, and so on
  //
  private static final long thousand = 1000;

  public static String format(long number) {
    StringBuffer value = new StringBuffer();

    while(number >= thousand) {
      long t = number % thousand;
      number /= thousand;

      value.insert(0, t);
      if(t < 10) value.insert(0, '0');
      if(t < 100) value.insert(0, '0');
      value.insert(0, ',');
    }
    value.insert(0, number);

    return value.toString();
  }  
}

---