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The javac program is part of the JDK that is a free download from the Oracle site.


You will have to learn how to write java code to do that.
Start with the tutorial:
Trail: Creating a GUI With...

If the source file is java, then what problems are you having using the javac compiler?
If you are getting errors, copy the full text of the error messages and post it here.


Are you asking how...

Do you have a definition for the language of the source file your compiler will read and a definition for the format of the output file the compiler will create?

There are no requirements for what...

What do you mean by "compiler"? The javac program is a compiler.
Please explain what kind of compiler you need?

What is the status of your project? What does "BUMP" mean?
You need to ask some specific questions.

That sounds like a big project. What language is the compiler for?

There are lots of samples of client code here on the forum. They are usually paired with server code.

That' a big question. Can you be more specific? What have you done so far and where are you having problems?