109 lines
3.9 KiB
Java
109 lines
3.9 KiB
Java
/*
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* Copyright (c) 2005, 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 4296930 5033603 7092679
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* @summary Make sure that Java runtime detects the platform time zone
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* correctly. Also make sure that the system time zone detection code
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* detects the "Automatically adjust clock for daylight saving
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* changes" setting correctly on Windows.
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* @run applet/manual=yesno DefaultTimeZoneTest.html
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*/
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import javax.swing.*;
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import java.awt.*;
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import java.awt.event.*;
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import java.text.*;
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import java.util.*;
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public class DefaultTimeZoneTest extends JApplet implements Runnable {
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static final String FORMAT = "yyyy-MM-dd HH:mm:ss zzzz (XXX)";
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JLabel tzid;
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JLabel label;
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SimpleDateFormat sdf = new SimpleDateFormat(FORMAT);
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JButton button = new JButton("English");
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Thread clock;
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boolean english = false;
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@Override
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public void init() {
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tzid = new JLabel("Time zone ID: " + sdf.getTimeZone().getID(), SwingConstants.CENTER);
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tzid.setAlignmentX(Component.CENTER_ALIGNMENT);
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label = new JLabel(sdf.format(new Date()), SwingConstants.CENTER);
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label.setAlignmentX(Component.CENTER_ALIGNMENT);
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button.addActionListener(new ActionListener() {
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@Override
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@SuppressWarnings("deprecation")
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public void actionPerformed(ActionEvent e) {
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english = (english == false);
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Locale loc = english ? Locale.US : Locale.getDefault();
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sdf = new SimpleDateFormat(FORMAT, loc);
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button.setLabel(!english ? "English" : "Local");
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}
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});
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button.setAlignmentX(Component.CENTER_ALIGNMENT);
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JPanel panel = new JPanel();
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panel.setLayout(new BoxLayout(panel, BoxLayout.PAGE_AXIS));
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panel.add(Box.createRigidArea(new Dimension(0, 10)));
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panel.add(tzid);
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panel.add(Box.createRigidArea(new Dimension(0, 5)));
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panel.add(label);
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panel.add(Box.createRigidArea(new Dimension(0, 10)));
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panel.add(button);
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getContentPane().add(panel);
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}
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@Override
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public void start() {
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clock = new Thread(this);
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clock.start();
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}
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@Override
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public void stop() {
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clock = null;
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}
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@Override
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public void run() {
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Thread me = Thread.currentThread();
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while (clock == me) {
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// Reset the default time zone so that
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// TimeZone.getDefault will detect the platform time zone
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TimeZone.setDefault(null);
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System.setProperty("user.timezone", "");
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TimeZone tz = TimeZone.getDefault();
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sdf.setTimeZone(tz);
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tzid.setText("Time zone ID: " + tz.getID());
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label.setText(sdf.format(new Date()));
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repaint();
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try {
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Thread.sleep(1000);
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} catch (InterruptedException e) {
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}
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}
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}
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}
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