processing.app.SketchException: Badly formed character constant (expecting quote, got s)
    at processing.mode.java.preproc.PdePreprocessor.checkForUnterminatedMultilineComment(PdePreprocessor.java:454)
    at processing.mode.java.preproc.PdePreprocessor.write(PdePreprocessor.java:490)
    at processing.mode.java.JavaBuild.preprocess(JavaBuild.java:270)
    at processing.mode.java.JavaBuild.preprocess(JavaBuild.java:185)
    at processing.mode.java.JavaBuild.build(JavaBuild.java:144)
    at processing.mode.java.JavaBuild.build(JavaBuild.java:123)
    at processing.mode.java.JavaMode.handleRun(JavaMode.java:160)
    at processing.mode.java.JavaEditor$19.run(JavaEditor.java:473)
    at java.lang.Thread.run(Thread.java:680)

1. /**
    * Simple Read
    *
    * Read data from the serial port and change the color of a rectangle
    * when a switch connected to a Wiring or Arduino board is pressed and released.
    * This example works with the Wiring / Arduino program that follows below.
    */
   
   
   import processing.serial.*;
   
   Serial myPort;  // Create object from Serial class
   int val;      // Data received from the serial port
   
   void setup()
   {
     size(200, 200);
   
2.  /****** I know that the first port in the serial list on my mac
      is always my  FTDI adaptor, so I open Serial.list()[0].
    On Windows machines, this generally opens COM1.
    Open whatever port is the one you're using.********/
3. /***********************************Above you can see that the guy who wrote this code worke on a mac like me
4. ************************************That's why I tried this example.*/
5. 
     String portName = Serial.list()[0];
     myPort = serial.Serial(port='/dev/tty.usbmodemfd131', 9600);
   }
   
   void draw()
   {
     if ( myPort.available() > 0) {  // If data is available,
       val = myPort.read();         // read it and store it in val
     }
     background(255);             // Set background to white
     if (val == 0) {              // If the serial value is 0,
       fill(0);                   // set fill to black
     }
     else {                       // If the serial value is not 0,
       fill(204);                 // set fill to light gray
     }
     rect(50, 50, 100, 100);
   }
   
   
   
   /*
   
   // Wiring / Arduino Code
   // Code for sensing a switch status and writing the value to the serial port.
   
   int switchPin = 4;                       // Switch connected to pin 4
   
   void setup() {
     pinMode(switchPin, INPUT);             // Set pin 0 as an input
     Serial.begin(9600);                    // Start serial communication at 9600 bps
   }
   
   void loop() {
     if (digitalRead(switchPin) == HIGH) {  // If switch is ON,
       Serial.print(1, BYTE);               // send 1 to Processing
     } else {                               // If the switch is not ON,
       Serial.print(0, BYTE);               // send 0 to Processing
     }
     delay(100);                            // Wait 100 milliseconds
   }
   
   */