From a27853c20587a361b1e0d1f1d6b884a58317ca2e Mon Sep 17 00:00:00 2001
From: duke <duke@openjdk.org>
Date: Fri, 10 Oct 2025 11:29:53 +0000
Subject: [PATCH] Backport a63f501b9238c6aae81c2e39fcc1852652116780

---
 .../tools/jpackage/helpers/jdk/jpackage/test/TKit.java   | 9 ++++-----
 test/jdk/tools/jpackage/macosx/HostArchPkgTest.java      | 3 ++-
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/TKit.java b/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/TKit.java
index 2298ada5612..bb001d5c802 100644
--- a/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/TKit.java
+++ b/test/jdk/tools/jpackage/helpers/jdk/jpackage/test/TKit.java
@@ -56,6 +56,7 @@
 import java.util.function.Supplier;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
+import jdk.internal.util.OperatingSystem;
 import jdk.jpackage.test.Functional.ExceptionBox;
 import jdk.jpackage.test.Functional.ThrowingConsumer;
 import jdk.jpackage.test.Functional.ThrowingRunnable;
@@ -63,8 +64,6 @@
 
 final public class TKit {
 
-    private static final String OS = System.getProperty("os.name").toLowerCase();
-
     public static final Path TEST_SRC_ROOT = Functional.identity(() -> {
         Path root = Path.of(System.getProperty("test.src"));
 
@@ -171,15 +170,15 @@ static String getCurrentDefaultAppName() {
     }
 
     public static boolean isWindows() {
-        return (OS.contains("win"));
+        return OperatingSystem.isWindows();
     }
 
     public static boolean isOSX() {
-        return (OS.contains("mac"));
+        return OperatingSystem.isMacOS();
     }
 
     public static boolean isLinux() {
-        return ((OS.contains("nix") || OS.contains("nux")));
+        return OperatingSystem.isLinux();
     }
 
     public static boolean isLinuxAPT() {
diff --git a/test/jdk/tools/jpackage/macosx/HostArchPkgTest.java b/test/jdk/tools/jpackage/macosx/HostArchPkgTest.java
index 5829aba23cc..69e1cd6c42a 100644
--- a/test/jdk/tools/jpackage/macosx/HostArchPkgTest.java
+++ b/test/jdk/tools/jpackage/macosx/HostArchPkgTest.java
@@ -28,6 +28,7 @@
 import javax.xml.xpath.XPath;
 import javax.xml.xpath.XPathConstants;
 import javax.xml.xpath.XPathFactory;
+import jdk.internal.util.Architecture;
 import jdk.jpackage.test.JPackageCommand;
 import jdk.jpackage.test.PackageTest;
 import jdk.jpackage.test.PackageType;
@@ -73,7 +74,7 @@ private static void verifyHostArch(JPackageCommand cmd) throws Exception {
                     "/installer-gui-script/options/@hostArchitectures",
                     doc, XPathConstants.STRING);
 
-        if ("aarch64".equals(System.getProperty("os.arch"))) {
+        if (Architecture.isAARCH64()) {
             TKit.assertEquals(v, "arm64",
                     "Check value of \"hostArchitectures\" attribute");
         } else {