CODEWITHSUNDEEP
javastring-to-datetimeformat-conversion
Sourav Mehra
Sourav Mehra

Reputation: 445

Converting from String to specific HH:mm date format

I have a String object which stores the current system time in HH:mm format. I have to convert this to a DATE object and maintain the same HH:mm format. How can this be done.

I tried using Date parse options but everytime I get the response in complete dd-MM-yyyy HH:mm:ss format and not in the required HH:mm format needed.

SimpleDateFormat sdf = new SimpleDateFormat("HH:mm");
String getCurrentTime = sdf.format(Calendar.getInstance().getTime());
Date date = sdf1.parse(getCurrentTime);

Expected output should be a Date result in HH:mm format.

Upvotes: 3

Views: 2625

Answers (4)

Blue Eyes White Boi
Blue Eyes White Boi

Reputation: 31

Like mentioned in the comments, Date is an object. Other way around with Date/Time API:

LocalTime time = LocalTime.now(); //current time 
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("HH:mm:ss"); //set format  
System.out.println(time.format(formatter));

Upvotes: 3

KayV
KayV

Reputation: 13855

Here is the simple example to solve this using java8 Date and Time API:

    DateTimeFormatter parser1 = DateTimeFormatter.ofPattern("HH:mm:ss");
    LocalDateTime ldd1 = LocalDateTime.now();
    System.out.println("DateTimeFormatter ldd1 = " + parser1.format(ldd1));

Upvotes: 1

BSeitkazin
BSeitkazin

Reputation: 3059

Instead of using Date use java.time.LocalTime. Example:

LocalTime localTime = LocalTime.now();

This class does not store and represent a date or time-zone. You can use the LocalTime.now() and LocalTime.of() methods to create the current time and specific time object respectively.

You can use the getHour(), getMinute() and getSecond() methods of the LocalTime class to get hour, minute and second respectively.

You can use the plus and minus methods of the LocalTime class to add or subtract hours, minutes etc.

You can use the compareTo(), isAfter() and isBefore() methods of the LocalTime class to compare the LocalTime objects.

Upvotes: 1

Ashishkumar Singh
Ashishkumar Singh

Reputation: 3600

You are expecting the output of parse to be a Date object in format HH:mm but this will never be the case because it is eventually a Date object. It will have information of date,month,year, time etc i.e. it is made to store both date and time information.

You get the information HH:mm using the format method which you did and it does give you that information

If you want only information of Hour and minutes, I suggest you to create a new class and populate it's value based on output of format method

Upvotes: 1

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