DecimalFormatSymbols with Locale

Question

For the code below I get a different result when I run it like this, and when I run it inside a Tomcat web app.

public static void main(String[] args)
{
    System.out.println(System.getProperty("user.language"));
    System.out.println(System.getProperty("user.country"));
    System.out.println(Locale.getDefault(Category.DISPLAY));
    System.out.println(Locale.getDefault(Category.FORMAT));

    Locale l = new Locale("de", "DE");
    System.out.println(l.getDisplayLanguage());
    DecimalFormatSymbols dfs = new DecimalFormatSymbols(l);
    System.out.println(dfs.getDecimalSeparator());

    l = new Locale.Builder().setLanguage("de").setRegion("DE").build();
    System.out.println(l.getDisplayLanguage());
    dfs = new DecimalFormatSymbols(l);
    System.out.println(dfs.getDecimalSeparator());
}

Standalone result (expected):

en
US
en_US
en_US
German
,
German
,

In Tomcat:

en
US
en_US
en_US
German
.
German
.

Can someone suggest what else influences DecimalFormatSymbols (and NumberFormat for that matter) that it doesn't use the locale provided. I'm using JDK 1.8 with language level 1.7.

EDIT: This only happens when Tomcat runs in Eclipse. Eclipse/OSGi seems to interfere with the locale-based formatting, but only in a specific situation.

Answer 1

Tomcat our ENV setting might have an issue i see it from the post here.

Try starting the tomcat as suggested in the above post with the following params set as a batch file:

-Duser.timezone=Europe/Berlin
-Duser.country=DE
-Duser.language=de