How do you compile multiple class files in a unix cmd prompt?

I have been using Java for a few years now, but for some reason I have a course that requires us to compile/run and hand-in our java assignments using Unix...
I know how to compile a simple program on unix with a single source file, but how the heck do you compile and run a program with say... 2 or more sources files linked together?
I really doubt the answer is just type
javac java1.java
javac java2.java
javac java3.java
and then running the source file with the main in it.
Hopefully someone here can help me.
Thanks
Roger

okay, well I took some time to read up online how to do this and I guess i'll answer my own post just in case someone else wants to know the answer.
2 ways I found were:
1)For example, you can list all of the source file names in a file named sourcefiles. This file might look like:
MyClass1.java
MyClass2.java
MyClass3.java
You could then run the compiler with:
% javac @sourcefiles
2)Or if all the files are in the same directory you can do this:
This example compiles all the source files in the package greetings.
% ls
greetings/
% ls greetings
Aloha.java GutenTag.java Hello.java Hi.java
% javac greetings/*.java
If that is confusing to read I found all the answers from this webpage:
http://java.sun.com/j2se/1.3/docs/tooldocs/solaris/javac.html

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