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8366537: Test "java/util/TimeZone/DefaultTimeZoneTest.java" is not updating the zone ID as expected

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Reviewed-by: naoto, jlu
This commit is contained in:
Vanitha B P 2025-09-03 15:31:15 +00:00 committed by Naoto Sato
parent d5935af228
commit a40afdd08f
1 changed files with 31 additions and 7 deletions
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38
test/jdk/java/util/TimeZone/DefaultTimeZoneTest.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2005, 2024, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2005, 2025, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -38,6 +38,11 @@ import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingConstants;
import javax.swing.BoxLayout;
import javax.swing.Box;
import java.awt.Dimension;
import java.awt.Component;
import java.awt.BorderLayout;
import java.awt.Window;
import java.lang.reflect.InvocationTargetException;
@ -98,17 +103,36 @@ public class DefaultTimeZoneTest {
private static Window createTest() {
var contents = new JFrame("DefaultTimeZoneTest");
var label = new JLabel(SDF.format(new Date()));
var panel = new JPanel();
var button = new JButton("Update Time Zone");
panel.add(button);
contents.setSize(350, 250);
contents.add(label, BorderLayout.NORTH);
contents.add(panel, BorderLayout.CENTER);
// Panel with vertical layout
var panel = new JPanel();
panel.setLayout(new BoxLayout(panel, BoxLayout.PAGE_AXIS));
// Time zone ID label
var timeZoneID = new JLabel("Time zone ID: " + SDF.getTimeZone().getID(), SwingConstants.CENTER);
timeZoneID.setAlignmentX(Component.CENTER_ALIGNMENT);
// Time label
var label = new JLabel(SDF.format(new Date()), SwingConstants.CENTER);
label.setAlignmentX(Component.CENTER_ALIGNMENT);
// Update button
var button = new JButton("Update Time Zone");
button.setAlignmentX(Component.CENTER_ALIGNMENT);
// Add components with spacing
panel.add(Box.createRigidArea(new Dimension(0, 10)));
panel.add(timeZoneID);
panel.add(Box.createRigidArea(new Dimension(0, 5)));
panel.add(label);
panel.add(Box.createRigidArea(new Dimension(0, 10)));
panel.add(button);
contents.add(panel);
// Update default time zone on button click
button.addActionListener(e -> {
// Clear JVM cached timezone and force reload from OS
TimeZone.setDefault(null);
System.setProperty("user.timezone", "");
TimeZone tz = TimeZone.getDefault();
SDF.setTimeZone(tz);
timeZoneID.setText("Time zone ID: " + tz.getID());
label.setText(SDF.format(new Date()));
contents.repaint();
});