I'm new to programming with processing. I was searching the internet and found  this game for processing. I liked it and decided to make a controler for it with Arduino. I've changed the game code but this error occurs when I try to run it:

2. error, disabling serialEvent() for //./COM5
3. java.lang.reflect.InvocationTargetException
4. at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
5. at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
6. at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
7. at java.lang.reflect.Method.invoke(Method.java:597)
8. at processing.serial.Serial.serialEvent(Unknown Source)
9. at gnu.io.RXTXPort.sendEvent(RXTXPort.java:732)
10. at gnu.io.RXTXPort.eventLoop(Native Method)
11. at gnu.io.RXTXPort$MonitorThread.run(RXTXPort.java:1575)
12. Caused by: java.lang.ArrayIndexOutOfBoundsException: 1
13. at ardgame.serialEvent(ardgame.java:74)
14. ... 8 more

I've tried to run the program many times and realised that sometimes it runs without the error (which is strange I think).

This is my code for Processing:

2. import processing.serial.*; 
3. 
   
4. int sphD = 10;
5. boolean shoot = false;
6. Serial myPort;
7. String inString;
8. float x = 0;
9. int butt = 0;
10. int buttPS = 0;
11. int buttCS = 0;
12. 
    
13. int randx()
14. {
15.   return int(random(600));
16. }
17. 
    
18. int[] sphXcord = { randx(), randx(), randx(), randx(), randx() };
19. int[] sphYcord = { 0, 0, 0, 0, 0 };
20. 
    
21. void setup()
22. {
23.   size(600, 620);
24.   println(Serial.list());
25.   myPort = new Serial(this, Serial.list()[1], 9600);
26.   myPort.buffer(3);
27. }
28. 
    
29. void draw()
30. {
31.   background(0);
32.   fill(color(0, 255, 0));
33.   stroke(color(0, 255, 0));
34.   triangle(x-8, 580, x+8, 580, x, 565);
35.   fill(color(255,0,0));
36.   stroke(color(255,0,0));  
37.   if(shoot==true)
38.   {
39.     sphereKiller(int(x));
40.     shoot = false;
41.   }  
42.   sphereDropper();
43.   gameEnder();
44.   delay(25);
45. }
46. 
    
47. void serialEvent(Serial myPort)
48. {
49.   inString = myPort.readStringUntil('\n');
50.   if(inString != null)
51.   {
52.     inString = trim(inString);
53.     int sensors[] = int(split(inString, ','));
54.     println("Sensor1: " + sensors[0] + "\tSensor2: " + sensors[1]);
55.     float val = float(sensors[0]);
56.     x = map(val, 0, 1023, 0, 600); 
57.     buttCS = int(sensors[1]);
58.     if(int(sensors[1]) == 1)
59.     {
60.       if(buttCS != buttPS)
61.       {
62.         buttPressed();
63.         buttPS = buttCS;
64.       }
65.     }
66.     else
67.     {
68.       buttPS = 0;
69.     }
70.   }   
71. }
72. 
    
73. void buttPressed()
74. {
75.   shoot = true;
76. }
77. 
    
78. void sphereDropper()
79. {
80.   stroke(255);
81.   fill(255);
82.   for(int i = 0; i < 5; i++)
83.   {
84.     ellipse(sphXcord[i], sphYcord[i]++, sphD, sphD);
85.   }
86. }
87. void sphereKiller(int shotX)
88.   {
89.     boolean hit = false;
90.     for (int i = 0; i < 5; i++)
91.     {
92.       if((shotX >= (sphXcord[i]-sphD/2)) && 
93.          (shotX <= (sphXcord[i]+sphD/2)))
94.       {
95.         hit = true;
96.         line(shotX, 565, shotX, sphYcord[i]);
97.         ellipse(sphXcord[i], sphYcord[i],
98.                 sphD+25, sphD+25);
99.         sphXcord[i] = randx();
100.         sphYcord[i] = 0;
101.       }    
102.     }
103.   
104.     if(hit == false)
105.     {
106.       line(shotX, 565, shotX, 0);
107.     }  
108.   
109.   }
110.   
111.   void gameEnder()
112.   {
113.     for (int i=0; i< 5; i++)
114.     {
115.       if(sphYcord[i]==600)
116.       {
117.         fill(color(255,0,0));
118.         noLoop();
119.       }
120.     }
121.   }

And this is my Arduino code:

2. int val;
3. 
   
4. void setup()
5. {
6.   pinMode(2, INPUT);
7.   Serial.begin(9600);
8.   delay(1000);
9. }
10. 
    
11. void loop()
12. {
13.   val = analogRead(A0);
14.   Serial.print(val);
15.   delay(2);
16.   Serial.print(",");  
17.   val = digitalRead(2);
18.   Serial.println(val);
19.   delay(2);
20. }

I have a potentiometer and a button attached to my Arduino.

Sorry for my English 

Thanks in advance