Java中如何判断某天是星期几

Question

如题所述

Answer 1

对中国人来说，普遍使用的是"yyyy-MM-dd"。 Java代码// 实现给定某日期，判断是星期几 public static String getWeekday(String date){//必须yyyy-MM-ddSimpleDateFormat sd = new SimpleDateFormat("yyyy-MM-dd");SimpleDateFormat sdw = new SimpleDateFormat("E");Date d = null;try {d = sd.parse(date);} catch (ParseException e) {e.printStackTrace();}return sdw.format(d);} 判断今天是星期几 import java.util.Calendar; import java.util.Date;public class WeekDay {public WeekDay() {super();// TODO Auto-generated constructor stub}public String getWeekDayString(){String weekString = "";final String dayNames[] = {"星期日","星期一","星期二","星期三","星期四","星期五","星期六"}; Calendar calendar = Calendar.getInstance();Date date = new Date();