output: #fixed code
                                public static void main(String[] args) throws FindFailed {
  
      System.out.println("********** Running Sikulix.main");
      
      if (args.length > 1 && args[0].toLowerCase().startsWith("runserver")) {
        if (args[1].toLowerCase().contains("start")) {
          RunServer.run(null);
          System.exit(0);
        } else {
          File fRunServer = new File(RunTime.get().fSikulixStore, "RunServer");
          String theServer = "";
          if (fRunServer.exists()) {
            theServer = FileManager.readFileToString(fRunServer).trim();
            if (!theServer.isEmpty()) {
              String[] parts = theServer.split(" ");
              RunClient runner = new RunClient(parts[0].trim(), parts[1].trim());
              runner.close(true);
              fRunServer.delete();
              System.exit(0);
            }
          }
        }
      }
  
      int dl = RunTime.checkArgs(args, RunTime.Type.API);
      if (dl > -1 && dl < 999) {
        testNumber = dl;
        Debug.on(3);
      } else {
        testNumber = -1;
      }
  
      testNumber = rt.getOptionNumber("testing.test", testNumber);
  
      if (dl == 999) {
        int exitCode = Runner.runScripts(args);
        cleanUp(exitCode);
        System.exit(exitCode);
      } else if (testNumber > -1) {
        if (!rt.testing) {
          rt.show();
          rt.testing = true;
        }
        Tests.runTest(testNumber);
        System.exit(1);
      } else {
        rt = RunTime.get();
        if (rt.fSxBaseJar.getName().contains("setup")) {
          Sikulix.popError("Not useable!\nRun setup first!");
          System.exit(0);
        }
        Debug.on(3);
        Settings.InfoLogs = false;
        Settings.ActionLogs = false;
  
        Screen s = new Screen();
  
  			RunClient runner = new RunClient("192.168.2.122", "50001");
  			runner.close(true);
  			System.exit(1);
  
        if (rt.runningWinApp) {
          popup("Hello World\nNot much else to do ( yet ;-)", rt.fSxBaseJar.getName());
          try {
            Screen scr = new Screen();
            scr.find(new Image(scr.userCapture("grab something to find"))).highlight(3);
          } catch (Exception ex) {
            popup("Uuups :-(\n" + ex.getMessage(), rt.fSxBaseJar.getName());
          }
          popup("Hello World\nNothing else to do ( yet ;-)", rt.fSxBaseJar.getName());
          System.exit(1);
        }
        String version = String.format("(%s-%s)", rt.getVersionShort(), rt.sxBuildStamp);
        File lastSession = new File(rt.fSikulixStore, "LastAPIJavaScript.js");
        String runSomeJS = "";
        if (lastSession.exists()) {
          runSomeJS = FileManager.readFileToString(lastSession);
        }
        runSomeJS = inputText("enter some JavaScript (know what you do - may silently die ;-)"
                + "\nexample: run(\"git*\") will run the JavaScript showcase from GitHub"
                + "\nWhat you enter now will be shown the next time.",
                "API::JavaScriptRunner " + version, 10, 60, runSomeJS);
        if (runSomeJS.isEmpty()) {
          popup("Nothing to do!", version);
        } else {
          FileManager.writeStringToFile(runSomeJS, lastSession);
          Runner.runjs(null, null, runSomeJS, null);
        }
      }
    }
input: #vulnerable code 
                                public static void main(String[] args) throws FindFailed {
  
      System.out.println("********** Running Sikulix.main");
  
      int dl = RunTime.checkArgs(args, RunTime.Type.API);
      if (dl > -1 && dl < 999) {
        testNumber = dl;
        Debug.on(3);
      } else {
        testNumber = -1;
      }
  
      testNumber = rt.getOptionNumber("testing.test", testNumber);
  
      if (dl == 999) {
        int exitCode = Runner.runScripts(args);
        cleanUp(exitCode);
        System.exit(exitCode);
      } else if (testNumber > -1) {
        if (!rt.testing) {
          rt.show();
          rt.testing = true;
        }
        Tests.runTest(testNumber);
        System.exit(1);
      } else {
        rt = RunTime.get();
        if (rt.fSxBaseJar.getName().contains("setup")) {
          Sikulix.popError("Not useable!\nRun setup first!");
          System.exit(0);
        }
        Debug.on(3);
        Settings.InfoLogs = false;
        Settings.ActionLogs = false;
  
        Screen s = new Screen();
  
  			RunClient runner = new RunClient("192.168.2.114", "50001");
  			runner.send("START");
  			runner.send("SDIR /Volumes/HD6/rhocke-plus/SikuliX-2014/StuffContainer/testScripts/testJavaScript");
  			runner.send("RUN testRunServer");
  			runner.close(true);
  			System.exit(1);
  
        if (rt.runningWinApp) {
          popup("Hello World\nNot much else to do ( yet ;-)", rt.fSxBaseJar.getName());
          try {
            Screen scr = new Screen();
            scr.find(new Image(scr.userCapture("grab something to find"))).highlight(3);
          } catch (Exception ex) {
            popup("Uuups :-(\n" + ex.getMessage(), rt.fSxBaseJar.getName());
          }
          popup("Hello World\nNothing else to do ( yet ;-)", rt.fSxBaseJar.getName());
          System.exit(1);
        }
        String version = String.format("(%s-%s)", rt.getVersionShort(), rt.sxBuildStamp);
        File lastSession = new File(rt.fSikulixStore, "LastAPIJavaScript.js");
        String runSomeJS = "";
        if (lastSession.exists()) {
          runSomeJS = FileManager.readFileToString(lastSession);
        }
        runSomeJS = inputText("enter some JavaScript (know what you do - may silently die ;-)"
                + "\nexample: run(\"git*\") will run the JavaScript showcase from GitHub"
                + "\nWhat you enter now will be shown the next time.",
                "API::JavaScriptRunner " + version, 10, 60, runSomeJS);
        if (runSomeJS.isEmpty()) {
          popup("Nothing to do!", version);
        } else {
          FileManager.writeStringToFile(runSomeJS, lastSession);
          Runner.runjs(null, null, runSomeJS, null);
        }
      }
    } 
                              #location 39 
                              #vulnerability type NULL_DEREFERENCE