HELP! Having Trouble Compiling my Programs

Question

I am designing an application based solely on java, where the user is allowed to choose from a list of selected programs and then see the corresponding code in a textarea. I have my code entering into the textarea fine but when i want the code inside the textarea to compile and eventually execute, i cannot get it to work. i have the 'compile' and 'run' as buttons on my toolbar.
below i have included a web site address describing what i would like to do. It works on much the same basis except i am not using turtle graphics. i would appreciate some feedback on this, and some code would be an added bonus to tackle my problem. i have spent hours on this problem but still no further.
http://www.otherwise.com/Jurtle.html
I have also been looking at the classpath and making changes but still no luck. i have decided to include this as well as it might be the root to the problem. My programs are compiling fine in JCreator, but thats using jdk1.3.1, and as you can see from the code below i am now using jdk1.4 in JBuilder. This shouldn't cause an overlap problem should it?
Below is some of the code i have been working on:
public void jButtonCompile_actionPerformed(ActionEvent e) {
        try {
String[] execArray = new String[7];
                        String classpath = new String();
                         execArray[0] = "c:/JBuilderX/jdk1.4/bin/javac.exe";
                         execArray[1] = "-deprecation";
                         execArray[2] = "-classpath";
                        execArray[3] = classpath.toString();
                         execArray[4] = "-sourcepath";
                         execArray[5] = "c:/Thesis/lib";
                       execArray[6] = "GUIcolor.java";
                       Process p = Runtime.getRuntime().exec(execArray);
catch (IOException ex) {
            System.out.println(ex);
    }.;C:\PROGRA~1\JMF21~1.1\lib\sound.jar;C:\PROGRA~1\JMF21~1.1\lib\jmf.jar;C:\JBuilderX\jdk1.4\src.jar;C:\JBuilderX\jdk1.4\lib\tools.jar;

Answer 1

Give this a look:
http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html
MOD