+ private static Boolean isAMac = null, isWindows = null, isLinux = null;
+
+ private static Boolean isHeadless = null;
+
+ /**
+ * added to check LaF for Linux
+ *
+ * @return
+ */
+ public static boolean isLinux()
+ {
+ return (isLinux == null
+ ? (isLinux = (System.getProperty("os.name").indexOf("Linux") >= 0))
+ : isLinux);
+ }
+