Why my processing cannot capture value?

Projects Interfacing w/ Software on the Computer
1

Here are the codes from arduino and processing. Can help check ?

arduino code.txt (799 Bytes)

Processing code.txt (684 Bytes)

2

Hi Leo,
Try using baud rate 115200 and com port 1 to 4. Open device manager, find Arduino port23 and change baud rate and port number. Do the same on Arduino. Hope it works, did for me!

3 
   String COM23 = Serial.list()[0];
   println(COM23);
   txtFile = createWriter("Raw_reading.txt");
   myPort = new Serial(this, "COM23" ,9600);

Determine which port the Arduino is likely connected to. Then, open COM23 regardless of what the Arduino is connected to. Why?