从java中的ClassLoader获取.class文件

Question

I compiled a Class from text

public class Foo{
    public Foo(){
    }
}

by org.abstractmeta.toolbox.compilation.compiler.JavaSourceCompile

and I want to know is there any way to get the compiled bytecode (.class file) from classloader or any any Object

Answer 1

you need to write a custom class loader that overloads the findClass method

 public Class findClass(String name) {
     byte[] b = ... // get the bytes from wherever they are generated
     return defineClass(name, b, 0, b.length);
 }

Answer 2

When you're using the JavaSourceCompiler , you have to provide a CompilationUnit to both versions of the compile method. Call getOutputClassDirectory() on this CompilationUnit to get the directory that holds all of the compiled .class files.