How to replace getDate() from the type Date which is deprecated?

Question

I have an existing program that I have to correct . It contains these lines :

        Date startDate = new Date();
        int day = startDate.getDate() - 1;

but getDate() from the type Date is deprecated so i have to change it using Calender. I tried this :

Calendar startDate = Calendar.getInstance();
startDate.add(Calendar.DATE, -1);
int day= startDate.getTime();

but this results into following error :

Type mismatch: cannot convert from Date to int

score 6 · Answer 1 · answered Sep 21 '15 at 12:33

One more good option is to use like :

System.out.println(DateFormat.getDateInstance().format(new Date()));

It will print the current date.

If you need time along with date then you can use like :

System.out.println(DateFormat.getDateTimeInstance().format(new Date()));

Jure · Accepted Answer · 2015-09-21T11:43:47.427

5

If you want to get day in month use this:

int day= startDate.get(Calendar.DAY_OF_MONTH);

If you want to get day in week use this:

int day= startDate.get(Calendar.DAY_OF_WEEK);

Also be careful about day of week, because day 0 is sunday not monday.

Field number for get and set indicating the day of the week. This field takes values SUNDAY, MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, and SATURDAY.

edited Sep 21 '15 at 11:43

answered Sep 21 '15 at 11:34

Jure

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seems like Calender class is not supported from GWT. I got this error while compiling : " No source code is available for type java.util.Calendar; did you forget to inherit a required module?" – Yuri Sep 21 '15 at 12:37
I didn't notice that you use GWT. I am not familiar with GWT but check this response: http://stackoverflow.com/questions/7009655/how-to-use-java-util-calendar-in-gwt – Jure Sep 21 '15 at 12:51

score 0 · Answer 3 · answered Sep 21 '15 at 11:32

0

Type mismatch: cannot convert from Date to int

change

  int day= startDate.getTime();

to

 Date dat= startDate.getTime();//return type Date

answered Sep 21 '15 at 11:32

SatyaTNV

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score 0 · Answer 4 · answered Sep 21 '15 at 11:34

0

As the javadocs suggest, use Calendar.get(Calendar.DAY_OF_MONTH)

answered Sep 21 '15 at 11:34

ennovation

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score 0 · Answer 5 · answered Sep 21 '15 at 11:34

0

To get the day of the month:

int day= startDate.get(Calendar.DAY_OF_MONTH);

From the Javadocs:

Field number for get and set indicating the day of the month. This is a synonym for DATE. The first day of the month has value 1.

answered Sep 21 '15 at 11:34

Rahul Tripathi

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score 0 · Answer 6 · answered Sep 21 '15 at 11:37

0

The getTime() function will return a Date Object which cannot be converted to int. If you want to get the day as an integer, you have to use:

int day = startDate.get(Calendar.DATE)

answered Sep 21 '15 at 11:37

Daniel Pflüger

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Bhuwan Prasad Upadhyay · Answer 7 · 2015-09-21T11:55:52.713

See on java doc at http://docs.oracle.com/javase/7/docs/api/java/util/Date.html#getTime():

Date object of getTime() method return long not in int so use like:

long time = startDate.getTime();

For Calendar docs http://docs.oracle.com/javase/7/docs/api/java/util/Calendar.html#getTime() Use like below:

long time = startDate.getTime().getTime();

For day of month:

Calendar c = Calendar.getInstance();
int dayOfMonth = c.get(Calendar.DATE);

score 0 · Answer 8 · answered Sep 21 '15 at 11:49

0

In Date#startDate.getDate() returns the day of the month :

Code#1-->

Date startDate = new Date();
int day = startDate.getDate() - 1;
System.out.println(day);

Through Calendar#.get(Calendar.DAY_OF_MONTH) you will get the same result as Date#startDate.getDate():

Code#2-->

Calendar startDate = Calendar.getInstance();
int day= startDate.get(Calendar.DAY_OF_MONTH)-1;
System.out.println(day);

So you can replace Code#1 by Code#2

answered Sep 21 '15 at 11:49

Shekhar Khairnar

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seems like Calender class is not supported from GWT . – Yuri Sep 21 '15 at 12:42

score 0 · Answer 9 · answered Sep 21 '15 at 12:02

java.time

The old java.util.Date/.Calendar classes are notoriously troublesome. They have been supplanted in Java 8 and later by the new java.time framework.

Note the use of time zone. Crucial in determining a date. If omitted, you implicitly rely on the JVM’s current default time zone. Better to specify the desired/expected time zone.

ZoneId zoneId = ZoneId.of( "America/Montreal" );
ZonedDateTime now = ZonedDateTime.now( zoneId );
int dayOfMonth = now.getDayOfMonth();
int dayOfWeek = now.getDayOfWeek().getValue();
int dayOfYear = now.getDayOfYear();

score 0 · Answer 10 · answered Sep 21 '15 at 13:05

0

Simply type int day = startDate.get(Calendar.DAY_OF_WEEK);

answered Sep 21 '15 at 13:05

Dilip Soni

1

How to replace getDate() from the type Date which is deprecated?

10 Answers10

java.time

Linked