如何知道某天是星期几,而且如果是星期一就显示星期一,如果是星期二就显示星期二

Question

Calendar now=Calendar.getInstance();        
Date time=new Date();          
          now.setTime(time);               
System.out.println(now.get(Calendar.DAY_OF_WEEK ));需要显示星期几自己加个switch... case语句处理一下

Answer 1

public String getDayFromDate(String sDate){
    SimpleDateFormat dateFormat1 =  new SimpleDateFormat("yyyy-MM-dd");
    String dayName = "";
    int iWeek = 0;
    try {
      java.util.Date dDate = dateFormat1.parse(sDate);
      GregorianCalendar gCalendar = new GregorianCalendar();
      gCalendar.setTime(dDate);
      iWeek = gCalendar.get(gCalendar.DAY_OF_WEEK);
      System.out.println("iWeek="+iWeek);
    }
    catch (Exception ex) {
      ex.printStackTrace();
      return "";
    }
    switch(iWeek){
      case 1:
        return "Sunday";
      case 2:
        return "Monday";
      case 3:
        return "Tuesday";
      case 4:
        return "Wednesday";
      case 5:
        return "Thursday";
      case 6:
        return "Friday";
      case 7:
        return "Saturday";
      default:
        return "";
    }
  }

Answer 2

1楼正解
一般都是Calendar.getInstance();