So my problem is that I'm following a guide from the "Getting Started With Arduino" book, but my code isn't working and when I download the sample code it has the same problem. 

What I'm trying to do is pull an rss feed and parse it in processing, and then send some data about it to my arduino. However, the guide has me using a URL object that processing doesn't think exists. So here's my code(the error is occurring at the red underlined section):

2. //lamp rss example(processing)
3. //matvavna
4. 
   
5. import processing.serial.*;
6. 
   
7. String feed = "http://www.makezine.com/blog/index.xml";
8. 
   
9. int interval = 10; // retrieve feed every sixty seconds
10. int lastTime;      // the last time we fetched the content
11. 
    
12. int love    = 0;
13. int peace   = 0;
14. int arduino = 0;
15. 
    
16. int light = 0; // light level measured by the lamp
17. 
    
18. Serial port;
19. color c;
20. String cs;
21. 
    
22. String buffer = ""; // accumulates characters coming from the arduino
23. 
    
24. PFont font;
25. 
    
26. 
    
27. void setup(){
28.   size(640, 480);
29.   frameRate(10);
30.   
31.   font = loadFont("CenturyGothic-32.vlw");
32.   fill(255);
33.   textFont(font, 32);
34.   
35.   String arduinoPort = Serial.list()[0];
36.   port = new Serial(this, arduinoPort, 9600); //connects to arduino
37.   
38.   lastTime = 0;
39.   fetchData();
40. }
41. 
    
42. void draw(){
43.   background(c);
44.   int n = (interval - ((millis()-lastTime)/1000));
45.   
46.   //build color for LEDs
47.   c = color(peace,love,arduino);
48.   cs = "#" + hex(c,6); //prepares a string to be sent to arduino
49.   
50.   text("Arduino Networked Lamp", 10, 40);
51.   text("reading data", 10, 100);
52.   text(feed, 10, 140);
53.   
54.   text("next update in " + n + " seconds", 10, 450);
55.   text("peace", 10, 200);
56.   text(" " + peace, 130, 200);
57.   rect(200, 212, peace, 28);
58.   
59.   text("love ", 10, 240);
60.   text(" " + love, 130, 280);
61.   rect(200, 212, love, 28);
62.   
63.   text("arduino ", 10, 280);
64.   text(" " + arduino, 130, 280);
65.   rect(200, 252, arduino, 28);
66.   
67.   //write color string to screen
68.   text("sending", 10, 380);
69.   text(cs, 200, 380);
70.   text("light level", 10, 320);
71.   rect(200, 352, light/10.23, 28);
72.   
73.   if( n <= 0){
74.     fetchData();
75.     lastTime = millis();
76.   }
77.   
78.   port.write(cs);//send sata to arduino
79.   
80.   if(port.available() > 0){ // check if there is anything writing
81.     int inByte = port.read(); // read one byte
82.     if(inByte != 10) {
83.       buffer = buffer + char(inByte);
84.     }
85.     else{
86.      //new line reached, time to process data
87.      if(buffer.length() > 1){
88.        //now we chop off the last character, it's a carriage return
89.        buffer = buffer.substring(0, buffer.length()-1);
90.        
91.        //turn buffer from string into number
92.        light = int(buffer);
93.        
94.        //reset buffer for next read cycle
95.        buffer = "";
96.        
97.        //need to clear data from arduino
98.        port.clear();
99.      }
100.     }
101.   } 
102. }
103. 
     
104. void fetchData(){
105.   //these strings are used to parse the feed
106.   String data;
107.   String chunk;
108.   
109.   //zero the counters
110.   love    = 0;
111.   peace   = 0;
112.   arduino = 0;
113.   
114.   try{
115.     URL url = new URL(feed); // an object to represent the url
116.     // prepare a connection
117.     URLConnection conn = url.openConnection();
118.     conn.connect(); // connects to site
119.     
120.     //this bit connects the incoming stream to a buffered reader that reads the data one line at a time
121.     BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
122.     
123.     //read each line from the feed
124.     while((data = in.realLine()) != null){
125.       StringTokenizer st = new StringTokenizer(data, "\" <>,.()[]"); // break down feed
126.       while(st.hasMoreTokens()) {
127.         //each chunk of data is made lowercase
128.         chunk = st.nextToken().toLowerCase();
129.         
130.         if(chunk.indexOf("love") >= 0 ) //found "love"?
131.           love++;
132.         if(chunk.indexOf("peace") >= 0 ) //found "peace"?
133.           peace++;
134.         if(chunk.indexOf("arduino") >= 0 ) //found "arduino"?
135.           arduino++;
136.       }
137.     }
138.     //set max # of references to 64
139.     if(peace > 64) peace = 64;
140.     if(love > 64) love = 64;
141.     if(arduino > 64) arduino = 64;
142.     //sets the max to 255
143.     peace = peace * 4;
144.     love = love * 4;
145.     arduino = arduino * 4;
146.   }
147.   catch(Exception ex){
148.     ex.printStackTrace();
149.     System.out.println("ERROR: " + ex.getMessage());
150.   }
151. }