import java.util.regex.*;
import java.util.*; 

public class One {
  public static void main( String args[] ){
    Scanner s = new Scanner(System.in); 
    String line; 
    Pattern circleMatch = Pattern.compile( "Circle radius (\\d+) location (\\d+) (\\d+)" );
    Pattern rectangleMatch = Pattern.compile( "Rectangle size (\\d+) (\\d+) location (\\d+) (\\d+)" );
    System.out.print("Enter>"); 
    while (s.hasNextLine()) {
      line = s.nextLine(); 
      if (line.equals("done")) break;
      System.out.println(line); 
      Matcher circle = circleMatch.matcher( line );
      Matcher rectangle = rectangleMatch.matcher( line );
      if (circle.find()) {
        System.out.println("I see a Circle, radius " + circle.group(1) + " at (" + circle.group(2) + ", " + circle.group(3) + ")"); 
      } else if (rectangle.find()) {
        System.out.println("I see a Rectangle."); 
      } else { 
        System.out.println("I don't see what you're saying."); 
      } 
      System.out.print("Enter>"); 
    }     
  }
}

     chat/HttpMessage.class
     chat/ChatApplet.class
     chat/HttpMessage.java
     chat/WEB-INF/lib
     chat/WEB-INF/classes/MessageSource.class
     chat/WEB-INF/classes/MessageSink.class
     chat/WEB-INF/classes/Chat.java

     chat/WEB-INF/classes/ChatServlet.class
     chat/WEB-INF/classes/Chat.class
     chat/WEB-INF/classes/ChatServlet.java
     chat/WEB-INF/classes
     chat/WEB-INF/web.xml

     chat/WEB-INF
     chat/index.html
     chat/ChatApplet.java
     chat

A common mistake would be to use jdk1.5 for JAVA_HOME and jdk1.6 for javac/java. (You get bad version number in class then...)

Tomcat notes: chapter 17, here.

Beemer, Joseph Michael   jmbeemer 13100 13101
Blechman, David Michael  dblechma 13102 13103
Ericson, Dana M          dericson 13104 13105
Momynkulov, Dauren       dammomyn 13106 13107
German, Dan-Adrian       dgerman  13108 13109
Jessee, Lloyd Douglas    djessee  13110 13111
Johnson, Charles Michael cj49     13112 13113
Ruble, Kevin Joseph      keruble  13114 13115
Schmidt, Garrett         schmidtg 13116 13117
Tomlinson, Evan Kyle     ektomlin 13118 13119
Mohamed, Emad Soliman    emohamed 13120 13121
Quinley, Jason Cecil     jquinley 13122 13123