Change string date format

Question

my current date format is: 08/11/2008 00:00

I need to convert this output to 2008/11/08 00:00 However, using SimpleDateFormat, as has been investigated, it cannot do this and give me a completely different result, here are my codes: Follow:

SimpleDateFormat simpleDateFormat2 = new SimpleDateFormat("yyyy/MM/dd HH:mm")
Date starting= simpleDateFormat2.parse(startTime);
System.out.println("" + simpleDateFormat2.format(starting) + " real date " + startTime);

I know that I understand the correct line, given that the following output occurs:

0014/05/01 00:00 real date 08/11/2008 00:00

I'm not too sure how the mechanics 0014/05/01 00:00 are discovered instead

2008/11/08 00:00

I look forward to all suggestions Thank you in advance

Answer 1

The first thing you need to do is parse the original value into an object Date

String startTime = "08/11/2008 00:00";
// This could be MM/dd/yyyy, you original value is ambiguous 
SimpleDateFormat input = new SimpleDateFormat("dd/MM/yyyy HH:mm");
Date dateValue = input.parse(startTime);

, dateValue , ...

SimpleDateFormat output = new SimpleDateFormat("yyyy/MM/dd HH:mm");
System.out.println("" + output.format(dateValue) + " real date " + startTime);

:

2008/11/08 00:00 real date 08/11/2008 00:00

, 0014/05/01 00:00: SimpleDateFormat ( yyyy/MM/dd HH:mm) 08 , 11 2008 ,

Answer 2

, , , , SimpleDateFormatter. MM/dd/yyyy HH:mm. SimpleDateFormat MM/dd/yyyy HH:mm.

.

SimpleDateFormat simpleDateFormat2 = new SimpleDateFormat("MM/dd/yyyy HH:mm");
//You gotta parse it to a Date before correcting it
Date parsedDate = simpleDateFormat2.parse(startTime);
simpleDateFormat2 = new SimpleDateFormat("yyyy/MM/dd HH:mm")
String newFormatttedDate = simpleDateFormat2.format(parsedDate);

Answer 3

.

    DateTimeFormatter currentFormatter = DateTimeFormatter.ofPattern("dd/MM/uuuu HH:mm");
    DateTimeFormatter convertedOutputFormatter = DateTimeFormatter.ofPattern("uuuu/MM/dd HH:mm");
    String startTime = "08/11/2008 00:00";
    LocalDateTime starting = LocalDateTime.parse(startTime, currentFormatter);
    System.out.println(starting.format(convertedOutputFormatter));

2008/11/08 00:00

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Answer 4

You parse a date 08/11/2008 00:00with a format yyyy/MM/dd HH:mm, but that date does not match in that format.