Hi Matt
I have had the exactly same problem.
Please try to compile it from command line with command like this:
javac -cp "C:\HFJSE\02" GameLauncher.java
Run it with something like this:
javac -cp "C:\HFJSE\02" GameLauncher.java
This will create three *.class files.
NOTE: my files was saved in folder 'HFJSE\02' on the C:\ drive so change the path in your command as needed.
I hope this helps.
Mik013