Java – Is It Possible to Compile into Machine Code?

If your application is doing XML operations and has JUnit tests then the only real dependency there is the dependency to junit.jar. Your application should not need any Eclipse specific libraries on the classpath.

You sound as if you do not have a complete understanding of what the classpath is and how it relates to the compilation and execution of Java code. I highly recommend that you learn how to develop a simple application with a text editor and the command line.

As far as submitting your code, you can compile and package your code into a JAR file, and submit this along with junit.jar and a simple batch file or shell script that will execute the Java virtual machine to run your program.

Another way would be to compile your program, unpackage junit.jar, and package it all together into an Executable Jar file. All of your classpath dependencies will be self contained within the one file and on most operating systems it can be launched as a typical executable.

Sure it is. Everything that introduces another level of interpretation into the computing stack is a virtual machine that a programmer can target. It may not become a very complete or successful one unless you put insane amounts of effort into it, but your claim to the technical term is valid.

"Machine code" is a more restricted term. Surprisingly, the convention is not to call code that runs on a virtual machine "machine code", but "byte code". "Machine code" is usually understood to mean code to be run on a physical microprocessor, i.e. a stream of its opcodes. Anything below that is micro code, and anything above is either "byte code" or just "code" (Java code, Python code, etc.)