Getting the class name from within the compiled class file

Question

hey!
I was wondering (i know its possible) how to read a .class and get the name of the class. ok that made not much sense^^ so, You have a file: c:\f.class but it wont run because the file name has to be the same as the classes name, right? so how can you read the class file i guess in binary mode to receive the correct class name.
I saw inside my f.class i have "realname.java" so i know now that the name of the class file should be realname.class, i tried ways to extract it from the class file but never had any success.
i think i need to study english^^
ps: i need this because i have some class files sent to me and the file names have been changed so they wont work, they only work when i open the class file in notepad and find out what its real name should be and then rename the file.
Edited by: forgotmydamnpass on May 7, 2009 11:23 AM

Answer 1

ah looks interesting, problem is i cant use it.. im prone to errors!
import java.net.URLClassLoader;
public class NewMain {
     * @param args the command line arguments
    public static void main(String[] args) {
        FileClassLoader loader = new FileClassLoader();
        Class clazz = loader.createclass("c:\\f.class");
        Method method = clazz.getName();
}apparently "createclass" doesnt exist :/
FileClassLoader = cannot find symbol
Method = cannot find symbol