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8263481: Specification of JComponent::setDefaultLocale doesn't mentio…
…n that passing 'null' restores VM's default locale

Reviewed-by: aivanov
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prsadhuk committed Mar 19, 2021
1 parent 1a21f77 commit d24e4cfef36026b781906a9e0c5cf519eb72696e
Showing 2 changed files with 50 additions and 0 deletions.
@@ -2851,6 +2851,8 @@ public static Locale getDefaultLocale() {
* potentially multiple lightweight applications running in a single VM)
* can have their own setting. An applet can safely alter its default
* locale because it will have no affect on other applets (or the browser).
* Passing {@code null} will reset the current locale back
* to VM's default locale.
* @param l the desired default <code>Locale</code> for new components.
* @see #getDefaultLocale
@@ -0,0 +1,48 @@
* Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit if you need additional information or have any
* questions.

/* @test
@bug 8263481
@summary Verifies calling setDefaultLocale(null) will reset
to VM's default locale
@run main TestNullLocale

import javax.swing.JComponent;
import java.util.Locale;

public class TestNullLocale {
public static void main(String[] args) {
Locale defaultLocale = JComponent.getDefaultLocale();
Locale currentLocale = JComponent.getDefaultLocale();
if (defaultLocale != currentLocale) {
System.out.println("currentLocale " + currentLocale);
System.out.println("defaultLocale " + defaultLocale);
throw new RuntimeException("locale not reset to default locale");

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