In Java we can use java.util.Date package or java.util.Calendar to work with Date and time. Let us see some simple examples.

1) java.util.Date

• Get current Date

  Java

  Date date = new Date(); System.out.println(date);

  1 2	Date date = new Date(); System.out.println(date);

  Output

  Sat May 14 16:21:23 IST 2016

  1	Sat May 14 16:21:23 IST 2016

• Convert String to date

  Java

  SimpleDateFormat simpleDateFormat = new SimpleDateFormat("dd/MM/yyyy"); String strDate = "12/05/2016"; Date date = simpleDateFormat.parse(strDate); System.out.println(date);

  1 2 3 4

  SimpleDateFormat simpleDateFormat = new SimpleDateFormat("dd/MM/yyyy"); String strDate = "12/05/2016"; Date date = simpleDateFormat.parse(strDate); System.out.println(date);

  Output

  Thu May 12 00:00:00 IST 2016

  1	Thu May 12 00:00:00 IST 2016

• Date formatting using date formatter

  Java

  Date date = new Date(); SimpleDateFormat simpleDateFormat = new SimpleDateFormat("dd/MM/yyyy"); System.out.println(simpleDateFormat.format(date));

  1 2 3

  Date date = new Date(); SimpleDateFormat simpleDateFormat = new SimpleDateFormat("dd/MM/yyyy"); System.out.println(simpleDateFormat.format(date));

  Output

  14/05/2016

  1	14/05/2016

• Get current date time

  Java

  SimpleDateFormat simpleDateFormat = new SimpleDateFormat("dd/MM/yyyy hh:mm:ss"); Date date = new Date(); System.out.println(simpleDateFormat.format(date));

  1 2 3

  SimpleDateFormat simpleDateFormat = new SimpleDateFormat("dd/MM/yyyy hh:mm:ss"); Date date = new Date(); System.out.println(simpleDateFormat.format(date));

  Output

  14/05/2016 04:42:16

  1	14/05/2016 04:42:16

2) java.util.Calendar

• Get current Date

  Java

  Calendar calendar = Calendar.getInstance(); Date date = calendar.getTime(); System.out.println(date);

  1 2 3

  Calendar calendar = Calendar.getInstance(); Date date = calendar.getTime(); System.out.println(date);

  Output

  Sat May 14 22:21:06 IST 2016

  1	Sat May 14 22:21:06 IST 2016

• Convert String to Calendar

  Java

  SimpleDateFormat simpleDateFormat = new SimpleDateFormat("dd/MM/yyyy"); String strDate = "12/05/2016"; Date date = simpleDateFormat.parse(strDate); Calendar calendar = Calendar.getInstance(); calendar.setTime(date); System.out.println(date);

  1 2 3 4 5 6

  SimpleDateFormat simpleDateFormat = new SimpleDateFormat("dd/MM/yyyy"); String strDate = "12/05/2016"; Date date = simpleDateFormat.parse(strDate); Calendar calendar = Calendar.getInstance(); calendar.setTime(date); System.out.println(date);

  Output

  Thu May 12 00:00:00 IST 2016

  1	Thu May 12 00:00:00 IST 2016

• Get current date time

  Java

  SimpleDateFormat simpleDateFormat = new SimpleDateFormat("dd/MM/yyyy hh:mm:ss"); Calendar calendar = Calendar.getInstance(); Date date = calendar.getTime(); System.out.println(simpleDateFormat.format(date));

  1 2 3 4

  SimpleDateFormat simpleDateFormat = new SimpleDateFormat("dd/MM/yyyy hh:mm:ss"); Calendar calendar = Calendar.getInstance(); Date date = calendar.getTime(); System.out.println(simpleDateFormat.format(date));

  Output

  14/05/2016 10:26:39

  1	14/05/2016 10:26:39

• Add and subtract from date

  Java

  Calendar calendar = Calendar.getInstance(); System.out.println(calendar.getTime()); //Increment month by 1 calendar.add(Calendar.MONTH, 1); System.out.println(calendar.getTime()); //Decrement month by 1 calendar.add(Calendar.MONTH, -1); System.out.println(calendar.getTime()); //Increment day of month by 5 calendar.add(Calendar.DAY_OF_MONTH, 5); System.out.println(calendar.getTime()); //Decrement day of month by 10 calendar.add(Calendar.DAY_OF_MONTH, -10); System.out.println(calendar.getTime());

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  Calendar calendar = Calendar.getInstance(); System.out.println(calendar.getTime()); //Increment month by 1 calendar.add(Calendar.MONTH, 1); System.out.println(calendar.getTime()); //Decrement month by 1 calendar.add(Calendar.MONTH, -1); System.out.println(calendar.getTime()); //Increment day of month by 5 calendar.add(Calendar.DAY_OF_MONTH, 5); System.out.println(calendar.getTime()); //Decrement day of month by 10 calendar.add(Calendar.DAY_OF_MONTH, -10); System.out.println(calendar.getTime());

  Output

  Sat May 14 22:27:26 IST 2016 Tue Jun 14 22:27:26 IST 2016 Sat May 14 22:27:26 IST 2016 Thu May 19 22:27:26 IST 2016 Mon May 09 22:27:26 IST 2016

  1 2 3 4 5

  Sat May 14 22:27:26 IST 2016 Tue Jun 14 22:27:26 IST 2016 Sat May 14 22:27:26 IST 2016 Thu May 19 22:27:26 IST 2016 Mon May 09 22:27:26 IST 2016