CODEWITHSUNDEEP
javalinuxcalendar
Bas Goossen
Bas Goossen

Reputation: 599

Is this a bug in Java.Calendar in Linux? Year not updated

I've got something strange happening in a server running Linux, while a windows machine performing the same code behaves normally.

It is happening with the following code:

    public static final SimpleDateFormat sqlDateFormat = new SimpleDateFormat("Y-M-d");

    Calendar cal = Calendar.getInstance();
    String now = sqlDateFormat.format(cal.getTime());
    System.out.println(now);
    cal.add(Calendar.DAY_OF_MONTH, -4);
    cal.set(Calendar.HOUR_OF_DAY, 0);
    cal.set(Calendar.MINUTE, 0);
    String trsh = sqlDateFormat.format(cal.getTime());
    System.out.println(trsh);

The output on the windows machine running:

    java version "1.7.0_07"
    Java(TM) SE Runtime Environment (build 1.7.0_07-b11)
    Java HotSpot(TM) 64-Bit Server VM (build 23.3-b01, mixed mode)

    Output:
    2014-01-02
    2013-12-29

The above is matching the expected result.

The output on the Linux machine running:

    java version "1.8.0-ea"
    Java(TM) SE Runtime Environment (build 1.8.0-ea-b108)
    Java HotSpot(TM) 64-Bit Server VM (build 25.0-b50, mixed mode)

    Output:
    2014-01-02
    2014-12-29

This is odd isn't it? Any nice workarounds?

Upvotes: 5

Views: 670

Answers (2)

user987339
user987339

Reputation: 10717

You have a wrong format for a year in a SimpleDateFormat. You should be using y instead of Y.

Upvotes: 5

Meno Hochschild
Meno Hochschild

Reputation: 44071

Maybe you have constructed your format object with pattern symbol Y instead of y. Y stands for year of weekdate, not the normal iso calendar year. It is locale-dependent, especially dependent on when the week starts. So the locale settings on your windows machine and the linux server might be different. Remember that java.util.Calendar IS dependent on locale, too.

Try new SimpleDateFormat("yyyy-MM-dd");

Upvotes: 7

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