How do I launch a program with java with different regional settings than the os. Windows 10.

Question

0.00/5 (No votes)

See more:

I have an interesting task, I have to build a graphical interface for graphical interface of another program. The issues is that the other program reads from a file but it correctly reads the data only if the windows regional format is in US format, can I launch the program using java with us regional format without changing the OS settings?

Also i'm not talking just about regional date format. And the operating system is windows 10.

Thanks.

What I have tried:

I found solutions such as locale emulator but I don't think they are applicable here.

https://www.codeproject.com/Questions/572431/Startingplusprogramplusinplusdifferentplusregional. Is one fix maybe but I don't think my program has the authority to change registry values.

Posted 25-May-21 22:01pm

Member 15205971

Updated 25-May-21 23:09pm

Add a Solution

Comments

Richard MacCutchan 26-May-21 4:57am

You can set some properties for an application when you launch it. So the following command will run the application in the US locale:

java -D"user.country=US" Application

Member 15205971 26-May-21 5:07am

Oh sorry I meant my java program has to launch non java program with different localization.

This is my code for launching the program (.exe)
ProcessBuilder processBuilder = new ProcessBuilder(file.getAbsolutePath());
processBuilder.directory(file.getParentFile());
try {
process = processBuilder.start();
...

Richard MacCutchan 26-May-21 5:12am

That is a different issue and you would need to check the options for whatever language the other program is written in. The quickest solution would probably be to modify the original program. Most languages allow applications to set their own locale.

Member 15205971 26-May-21 5:20am

I don't have access to the original programs source code and the application follows the current windows os locale. using your command or setDefault(Locale.US) line before calling the process didn't help. I probably can't fix it.

Thanks a lot for trying to help though. I could have been more clear in my question.

Richard MacCutchan 26-May-21 5:27am

My answer will only work for running a Java application, which is what your question was asking about. Any normal executable runs in the default Windows locale, so needs to use the features of the Windows SDK.

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Richard MacCutchan · Answer 1 · 2021-05-25T23:09:00

I have just confirmed the above situation (default locale is GB) and get the results below when printing the date with the following code:

Java

Date dt = new Date();
String myString = DateFormat.getDateInstance().format(dt);
System.out.printf("It is now: %s\n", myString);

C:\Users\rjmac\Documents\VSCode\Java>java test 
It is now: 26 May 2021
Java test result: 0

C:\Users\rjmac\Documents\VSCode\Java>java -D"user.country=US" test 
It is now: May 26, 2021
Java test result: 0