Arduino到Java Communication

我要简短而简单 . 我有一个arduino，它通过串行通信将数据发送到java脚本 . 在加电和休息时，arduino将不可见数据发送到需要清除/清除的串口 . 我尝试从arduino和java程序进行串行刷新，似乎都没有工作 . 我的arduino代码和java代码发布在下面 . 提前致谢！

void setup() {

delay(2500);
Serial.begin(9600);
flushreceive();
pinMode(13, OUTPUT);
}


void loop() {

char input;

if (Serial.available()) {
input = Serial.read();

//Turn on the LED.
if(input == '1'){
digitalWrite(13, HIGH);
Serial.print("ON");
flushreceive();
}

//Have the LED blink 10 times.
if(input == '2') {
Serial.print("OX");
for(int i = 0; i < 10; i++) {
digitalWrite(13, HIGH);
delay(1000);
digitalWrite(13, LOW);
delay(100);
flushreceive();
}
}

 //Turn off the LED.
 if(input == '3') {
 digitalWrite(13, LOW);
 Serial.print("OFF");
 flushreceive();
 }

 } // END IF SERIAL AVAILABLE
 } // END LOOP

 void flushreceive() {
 while(Serial.available())
 Serial.flush();
 }

下面是我的java代码，当按下按钮时，它会将代码发送到arduino，它打开或关闭LED，arduino发回OFF或ON的确认但是我没有收到这个... ...角色进来或根本没有 .

//Listener for the blink button.
    btnBlink.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
            btnOn.setBackground(null);
            btnBlink.setBackground(Color.yellow);
            btnOff.setBackground(null);
            //Turns on the #13 pin LED and flashes it 10 times.
            if(comPort.isOpen() == true) {
                InputStream inPut = comPort.getInputStream();
                BufferedReader readBuffer = new BufferedReader(new InputStreamReader(inPut));
                //Send a 2 to the Arduino and update the user.
                lblStatus.setText("Status: LED Blinking");
                outPut.print("2");
                outPut.flush();
                 byte[] buffer = new byte[2];
                   try {
                         String message = "OX";
                         int len = inPut.read(buffer);
                             if (len > 0) {
                                            message = new String(buffer);
                                            System.out.println(message);
                                           }


                             if (message.trim().contains("OX")) {
                                btnBlink.setBackground(Color.yellow);
                                outPut.flush();
                               } else {
                                       System.out.println("ERROR!!"));
                                      }

                        } catch (Exception ep) { ep.printStackTrace();   }
                        } else {
                       //Update the status/console if the Arduino hasn't been connected.
                        lblStatus.setText("Status: Connect Arduino");
                        }
                        }
                        });