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

*** 21,31 ****
   * 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;
  
  import java.util.regex.Pattern;
  
  /**
   * Platform
--- 21,31 ----
   * 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.incubator.jpackage.internal;
  
  import java.util.regex.Pattern;
  
  /**
   * Platform
*** 100,105 ****
--- 100,121 ----
      }
  
      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");
+     }
  }