code: public static boolean isFSCaseSensitive() {
  	if (isFSCaseSensitive == null) {
  	    try {
  		_isFSCaseSensitive(File.createTempFile("abcx", "txt"));
  	    }
  	    catch (IOException e) {
  		File f = new File("abcx.txt").getAbsoluteFile();
  		try {
  		    f.createNewFile();
  		    _isFSCaseSensitive(f);
  
  		}
  		catch (IOException e1) {
  		    throw new RuntimeException(e1.getMessage());
  		}
  	    }
  	}
  	return isFSCaseSensitive.booleanValue();
      }
docs: returns if the file system case sensitive or not
  
  @return is the file system case sensitive or not