8305950: Have -XshowSettings option display tzdata version

Backport-of: d27e56e6d7ea24eb8de91f42fac851839798b4ee

Author: GoeLin

src/java.base/share/classes/sun/launcher/LauncherHelper.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2007, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2007, 2023, 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
@@ -87,6 +87,7 @@
 import jdk.internal.module.Modules;
 import jdk.internal.platform.Container;
 import jdk.internal.platform.Metrics;
+import sun.util.calendar.ZoneInfoFile;
 
 
 public final class LauncherHelper {
@@ -280,6 +281,8 @@ private static void printLocale() {
                 Locale.getDefault(Category.DISPLAY).getDisplayName());
         ostream.println(INDENT + "default format locale = " +
                 Locale.getDefault(Category.FORMAT).getDisplayName());
+        ostream.println(INDENT + "tzdata version = " +
+                ZoneInfoFile.getVersion());
         printLocales();
         ostream.println();
     }

test/jdk/tools/launcher/Settings.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2010, 2023, 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
@@ -25,7 +25,7 @@
 
 /*
  * @test
- * @bug 6994753 7123582
+ * @bug 6994753 7123582 8305950
  * @summary tests -XshowSettings options
  * @modules jdk.compiler
  *          jdk.zipfs
@@ -69,11 +69,13 @@ static void checkNotContains(TestResult tr, String str) {
     private static final String LOCALE_SETTINGS = "Locale settings:";
     private static final String SYSTEM_SETTINGS = "Operating System Metrics:";
     private static final String STACKSIZE_SETTINGS = "Stack Size:";
+    private static final String TZDATA_SETTINGS = "tzdata version";
 
     static void containsAllOptions(TestResult tr) {
         checkContains(tr, VM_SETTINGS);
         checkContains(tr, PROP_SETTINGS);
         checkContains(tr, LOCALE_SETTINGS);
+        checkContains(tr, TZDATA_SETTINGS);
         if (System.getProperty("os.name").contains("Linux")) {
             checkContains(tr, SYSTEM_SETTINGS);
         }
@@ -139,6 +141,7 @@ static void runTestOptionLocale() throws IOException {
         checkNotContains(tr, VM_SETTINGS);
         checkNotContains(tr, PROP_SETTINGS);
         checkContains(tr, LOCALE_SETTINGS);
+        checkContains(tr, TZDATA_SETTINGS);
     }
 
     static void runTestOptionSystem() throws IOException {