/** Determine whether the current user has Windows administrator privileges. */
  public static boolean isWinAdmin() {
    if (!isWinPlatform()) return false;
    //    for (String group : new com.sun.security.auth.module.NTSystem().getGroupIDs()) {
    //      if (group.equals("S-1-5-32-544")) return true; // "S-1-5-32-544" is a well-known
    // security identifier in Windows. If the current user has it then he/she/it is an
    // administrator.
    //    }
    //    return false;

    try {
      Class<?> ntsys = Class.forName("com.sun.security.auth.module.NTSystem");
      if (ntsys != null) {
        Object groupObj =
            SystemUtils.invoke(
                ntsys.newInstance(), ntsys.getDeclaredMethod("getGroupIDs"), (Object[]) null);
        if (groupObj instanceof String[]) {
          for (String group : (String[]) groupObj) {
            if (group.equals("S-1-5-32-544"))
              return true; // "S-1-5-32-544" is a well-known security identifier in Windows. If the
                           // current user has it then he/she/it is an administrator.
          }
        }
      }
    } catch (ReflectiveOperationException e) {
      System.err.println(e);
    }
    return false;
  }
 public static void showDesktop() { // Windows only
   try {
     if (SystemUtils.isWinPlatform())
       RUNTIME.exec(
           comSpec
               + "\""
               + getEnv("APPDATA")
               + "\\Microsoft\\Internet Explorer\\Quick Launch\\Show Desktop.scf\"");
   } catch (IOException e) {
     e.printStackTrace();
   }
 }
 public static Frame getSharedOwnerFrame() {
   try {
     Method getSharedOwnerFrame =
         SwingUtilities.class.getDeclaredMethod("getSharedOwnerFrame"); // package-protected
     Object frame =
         SystemUtils.invoke(
             null,
             getSharedOwnerFrame); // getSharedOwnerFrame() is static - invoke it on null object
     return (frame instanceof Frame) ? (Frame) frame : null;
   } catch (NoSuchMethodException | SecurityException e) {
     e.printStackTrace();
   }
   return null;
 }
  /**
   * Try to determine whether this application is running under Windows or some other platform by
   * examining the "os.name" property.
   */
  static {
    String os = System.getProperty("os.name");
    // String version = System.getProperty("os.version"); // for Win7, reports "6.0" on JDK7, should
    // be "6.1"; for Win8, reports "6.2" as of JDK7u17

    if (SystemUtils.startsWithIgnoreCase(os, "windows 7"))
      isWin7 = true; // reports "Windows Vista" on JDK7
    else if (SystemUtils.startsWithIgnoreCase(os, "windows 8"))
      isWin7 = true; // reports "Windows 8" as of JDK7u17
    else if (SystemUtils.startsWithIgnoreCase(os, "windows vista")) isVista = true;
    else if (SystemUtils.startsWithIgnoreCase(os, "windows xp")) isWinXP = true;
    else if (SystemUtils.startsWithIgnoreCase(os, "windows 2000")) isWin2k = true;
    else if (SystemUtils.startsWithIgnoreCase(os, "windows nt")) isWinNT = true;
    else if (SystemUtils.startsWithIgnoreCase(os, "windows"))
      isWin9X = true; // win95 or win98 (what about WinME?)
    else if (SystemUtils.startsWithIgnoreCase(os, "mac")) isMac = true;
    else if (SystemUtils.startsWithIgnoreCase(os, "so")) isSolaris = true; // sunos or solaris
    else if (os.equalsIgnoreCase("linux")) isLinux = true;
    else isUnix = true; // assume UNIX, e.g. AIX, HP-UX, IRIX

    String osarch = System.getProperty("os.arch");
    String arch = (osarch != null && osarch.contains("64")) ? "_x64" /* eg. 'amd64' */ : "_x32";
    String syslib = SYSLIB + arch;

    try { // loading a native lib in a static initializer ensures that it is available before any
          // method in this class is called:
      System.loadLibrary(syslib);
      System.out.println(
          "Done loading '" + System.mapLibraryName(syslib) + "', PID=" + getProcessID());
    } catch (Error e) {
      System.err.println(
          "Native library '"
              + System.mapLibraryName(syslib)
              + "' not found in 'java.library.path': "
              + System.getProperty("java.library.path"));
      throw e; // re-throw
    }

    if (isWinPlatform()) {
      System.setProperty(
          "line.separator", "\n"); // so we won't have to mess with DOS line endings ever again
      comSpec =
          getEnv(
              "comSpec"); // use native method here since getEnvironmentVariable() needs to know
                          // comSpec
      comSpec = (comSpec != null) ? comSpec + " /c " : "";

      try (BufferedReader br =
          new BufferedReader(
              new InputStreamReader(
                  RUNTIME.exec(comSpec + "ver").getInputStream()))) { // fix for Win7,8
        for (String line = null; (line = br.readLine()) != null; ) {
          if (isVista && (line.contains("6.1" /*Win7*/) || line.contains("6.2" /*Win8*/))) {
            isVista = false;
            isWin7 = true;
          }
        }
      } catch (IOException e) {
        e.printStackTrace();
      }

      String cygdir = getEnv("cygdir"); // this is set during CygWin install to "?:/cygwin/bin"
      isCygWin = (cygdir != null && !cygdir.equals("%cygdir%"));
      cygstartPath = cygdir + "/cygstart.exe"; // path to CygWin's cygutils' "cygstart" binary

      if (getDebug() && Desktop.isDesktopSupported()) {
        Desktop desktop = Desktop.getDesktop();
        for (Desktop.Action action : Desktop.Action.values())
          System.out.println(
              "Desktop action " + action + " supported?  " + desktop.isSupported(action));
      }
    }
  }