[RESOLVED] problem with java runtime compilation in my jsp file

[Pouncer]

I've embedded this java code in my test.jsp file (it attempts to compile a file at runtime)

  <% 		
			// Attempt to automatically compile a file.
			String s = null;
			String dir = "C:\\Program Files\\Apache Software Foundation\\Tomcat 6.0\\webapps\\eg\\submissions\\msk9\\";
			String f = dir + "TestPlayer.java";
			
			try {
				Process p = Runtime.getRuntime().exec("javac \"" + f + "\"");
				
				BufferedReader stdError = new BufferedReader(new InputStreamReader(p.getErrorStream()));
				
				ArrayList array = new ArrayList();
				
            	while ((s = stdError.readLine()) != null) {
                	array.add(s);
           		}
				
				if (array.size() > 0) {
					out.println("Your submission had compilation errors:<br><br>");
					
					for (int i = 0; i < array.size(); i++) {
						out.println(array.get(i) + "<br>");
					}
				}
				else {
					out.println("Your submission successfully compiled and has been accepted by the system.");
				}
				
			}
			catch (IOException e) { }
%>

Now when i browse to my test.jsp on the web, the page gives me:

Your submission had compilation errors:

C:\Program Files\Apache Software Foundation\Tomcat 6.0\webapps\eg\submissions\msk9\TestPlayer.java:3: cannot find symbol
symbol: class ComputerPlayerInterface
public class TestPlayer implements ComputerPlayerInterface {
^
1 error

Now this is a problem, it should compile fine.. it compiles absolutely fine when i execute the normal javac command in the cmd window. but this doesnt seem to work on the web jsp. the ComputerPlayerInterface,java is also in the same directory so i dont know why it throws that error

This is TestPlayer.java

import java.io.*;

public class TestPlayer implements ComputerPlayerInterface {

    public String test() {
	return "Tom";
    }
}

This is ComputerPlayerInterface.java

public interface ComputerPlayerInterface {
    
    // Method signatures, which all submitted computer players must have.
    String test();
}

Both files are in this folder;
C:\Program Files\Apache Software Foundation\Tomcat 6.0\webapps\eg\submissions\msk9

i dont know why the runtime code doesnt compile on the web