Java Data Type - 如何除了周末或周六或周日在两个日期之间获得每天

import java.util.Calendar;
import java.util.Date;

public class Main {
  public static void main(String[] args) {
    Calendar calendar = Calendar.getInstance();

    // 15-04-2012
    calendar.set(Calendar.DAY_OF_MONTH, 15);
    calendar.set(Calendar.YEAR, 2012);
    calendar.set(Calendar.HOUR, 0);
    calendar.set(Calendar.MINUTE, 0);
    calendar.set(Calendar.SECOND, 0);
    calendar.set(Calendar.MONTH, 3);
    Date start = calendar.getTime();

    // 15-06-2012
    calendar.set(Calendar.MONTH, 5);
    Date end = calendar.getTime();

    calendar.setTime(start);
    Date d = null;
    while ((d = calendar.getTime()).before(end) || d.equals(end)) {
      int day = calendar.get(Calendar.DAY_OF_WEEK);
      if (day != Calendar.SATURDAY && day != Calendar.SUNDAY) {
        System.out.println(d);
      }
      calendar.add(Calendar.DAY_OF_MONTH, 1);
    }
  }
}