Java中判斷某一天是否是周末的方法

Calendar cal = Calendar.getInstance();
Date date = new Date();
cal.setTime(date);
if (cal.get(Calendar.DAY_OF_WEEK)==Calendar.SATURDAY||cal.get(Calendar.DAY_OF_WEEK)==Calendar.SUNDAY)
{
    System.out.println("是周末");
}
 else
{
    System.out.println("不是周末");
}