在String類型轉Date類型或者Calendar類型時,如果String的日期格式不對,在轉換過程中不會報錯。
例如:String類型的時間是:2019-02-29
String str3 = "2019-02-29";
Date date3 = simple.parse(str3);
//Date類型輸出:2019-03-01
String str4 = simple.format(date3);
System.out.println("Date:"+str4);
Calendar calendar = Calendar.getInstance();
calendar.setTime(date3);
//Calendar類型輸出:2019:2:1
System.out.println("Calendar:"+calendar.get(Calendar.YEAR)+":"+calendar.get(Calendar.MONTH)+":"+calendar.get(Calendar.DAY_OF_MONTH));