How to set default parameters to jvm?

Question

I'd like to know how I can pass parameters to JVM before it is started. For example,

I think I need to modify JVM timezone parameter.

I use eclipse with windows 7.

score 11 · Accepted Answer · answered Feb 01 '13 at 08:34

11

In Eclipse go to

Run As -> Run Configurations -> Arguments -> VM Arguments

and set required JMV argument, eg

-Duser.timezone=PST

you can get all timezone IDs available in JVM by running this test

for(String id : TimeZone.getAvailableIDs()) {
    System.out.println(id);
}

output

Etc/GMT+12
Etc/GMT+11
Pacific/Midway
Pacific/Niue
Pacific/Pago_Pago
Pacific/Samoa
....

answered Feb 01 '13 at 08:34

Evgeniy Dorofeev

thanks for your advice. And another problem is that when I run this code: `System.out.println(TimeZone.getDefault());` output is sun.util.calendar.ZoneInfo[id="America/Caracas",offset=-16200000,dstSavings=0,useDaylight=false,transitions=5,lastRule=null] How to change this another way? – iceberg Feb 01 '13 at 11:52
1

Use one of the TimeZone methods eg TimeZone.getDefault().getDisplayName() – Evgeniy Dorofeev Feb 01 '13 at 11:57

score 4 · Answer 2 · edited May 23 '17 at 10:27

4

JVM parameters are specified in command line with -D

java -Dfile.encoding=utf-8 -jar myApp.jar

In your case use -Duser.timezone

edited May 23 '17 at 10:27

Community

answered Feb 01 '13 at 08:22

Nikolay Kuznetsov

1

This is not what the OP asked for. – bmargulies Feb 01 '13 at 08:36
@bmargulies, what is the difference? Post your answer. – Nikolay Kuznetsov Feb 01 '13 at 08:37
Rereading his tortured syntax I'm no longer sure that there's a problem with your answer. – bmargulies Feb 01 '13 at 08:42
@bmargulies, yes, his question is not clear. The current two answers are supplemental to each other with current question formulation. – Nikolay Kuznetsov Feb 01 '13 at 08:44
1

so what if I have no eclipse and no command line - is there a default configuration file? maybe some kind of default property file but where? – n611x007 Apr 30 '15 at 06:25

2 Answers2