I'm trying to compile a whole java project dynamically using the Compiler API. My initial thoughts of achieving this is to first know how to compile it in one-line using command line, then apply the same principle/parameters on the compiler object. Problem is, I never did, err, compiled using CLI. (Disadvantage of using an IDE? Haha)
So, am I on the right track? Moreover, can the project compilation achieved in one line execution? I'm having a hard time figuring this out because of the fact that it's a project, it contains packages galore.
So you either want to learn javac or Java Compiler API?
If you want CLI compilation look at javac (Linux | windows).
Alternatively for API, then programmatic use of Java's compiler API will definitely require more that one line, this will get you the compiler:
JavaCompilercompiler =ToolProvider.getSystemJavaCompiler();
Then you'll still need to load classes, write out byte code, and possibly package as a JAR.
You should use StandardJavaFileManager as you've probably many classes to manage, there's an example in the top of the JavaCompiler javadoc, but search for StandardJavaFileManager+JavaCompiler+example to find clearer examples like this blog post.