DateTimeUtil

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;

public  class DateTimeUtil {
 private static DateTimeUtil instance;

 private DateTimeUtil(){
 }


 public static DateTimeUtil getInstance(){
  if (instance == null){
   instance = new DateTimeUtil();
  }
  return instance;
 }


 //獲取系統當前日期時間
         public String getCurrentDateTime() {
  SimpleDateFormat formatter = new SimpleDateFormat("yyyy年MM月dd日 HH:mm:ss");
  Date date = new Date(System.currentTimeMillis());
  String curDate = formatter.format(date);
  return curDate;
 }
 public String getCurrentDateTimes() {
  SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd  HH:mm:ss");
  Date date = new Date(System.currentTimeMillis());
  String curDate = formatter.format(date);
  return curDate;
 }

 //獲取系統當前日期
         public String getCurrentDate() {
  SimpleDateFormat formatter = new SimpleDateFormat("yyyy年MM月dd日");
  Date date = new Date(System.currentTimeMillis());
  String curDate = formatter.format(date);
  return curDate;
 }


 //獲取系統當前日期(英文格式)
         public String getCurrentDateEnglish() {
  SimpleDateFormat formatter = new SimpleDateFormat("MMM d, yyyy", Locale.ENGLISH);
  Date date = new Date(System.currentTimeMillis());
  String curDate = formatter.format(date);
  return curDate;
 }


 //獲取系統當前時間
 public String getCurrentTime() {
  SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");
  Date date = new Date(System.currentTimeMillis());
  String curDate = formatter.format(date);
  return curDate;
 }


 //獲取系統當前時間
         public String getCurrentTimeHHMM() {
  SimpleDateFormat formatter = new SimpleDateFormat("HH:mm");
  Date date = new Date(System.currentTimeMillis());String curDate = formatter.format(date);
  return curDate;
 }


 //獲取系統當前是星期幾
         public String getCurrentWeekDay(int type) {
  String week = "";
  Calendar c1 = Calendar.getInstance();
  int day = c1.get(Calendar.DAY_OF_WEEK);
  if (type == 2){
   switch (day){
    case 1:
     week = "Sunday";
     break;
    case 2:
     week = "Monday";
     break;
    case 3:
     week = "Tuesdays";
     break;
    case 4:
     week = "Wednesday";
     break;
    case 5:
     week = "Thursday";
     break;
    case 6:
     week = "Fridays";
     break;
    case 7:
     week = "Saturday";
     break;


   }
  }else {
   switch (day){
   case 1:
 week = "星期日";
 break;
 case 2:
 week = "星期一";
 break;
    case 3:
     week = "星期二";
 break;
    case 4:
     week = "星期三";
        break;
 case 5:
 week = "星期四";
 break;
 case 6:
 week = "星期五";
 break;
 case 7:
 week = "星期六";
 break;


 }
 }


 return week;
 }
}