src/jdk.incubator.jpackage/share/classes/jdk/incubator/jpackage/internal/Platform.java

@@ -21,11 +21,11 @@
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 
-package jdk.jpackage.internal;
+package jdk.incubator.jpackage.internal;
 
 import java.util.regex.Pattern;
 
 /**
  * Platform

@@ -100,6 +100,22 @@
     }
 
     static int getMinorVersion() {
         return minorVersion;
     }
+
+    static boolean isWindows() {
+        return getPlatform() == WINDOWS;
+    }
+
+    static boolean isMac() {
+        return getPlatform() == MAC;
+    }
+
+    static boolean isLinux() {
+        return getPlatform() == LINUX;
+    }
+
+    static RuntimeException throwUnknownPlatformError() {
+        throw new IllegalArgumentException("Unknown platform");
+    }
 }