CCLRun.java

package classloader;

// $Id: CCLRun.java 19 2010-04-06 06:04:19Z deepnighttwo $

import java.lang.reflect.Method;

/*

 CCLRun executes a Java program by loading it through a
 CompilingClassLoader.

 */

public class CCLRun {
    static public void main(String args[]) throws Exception {

        // The first argument is the Java program (class) the user
        // wants to run

        CompilingClassLoader ccl = new CompilingClassLoader();

        for (int i = 0; i < 2; i++) {

            args = new String[] { "classloader.Foo", "aaaaaa", "bbbbbb" };

            String progClass = args[0];

            // And the arguments to that program are just
            // arguments 1..n, so separate those out into
            // their own array
            String progArgs[] = new String[args.length - 1];
            System.arraycopy(args, 1, progArgs, 0, progArgs.length);

            // Create a CompilingClassLoader

            // Load the main class through our CCL
            Class<?> clas = ccl.loadClass(progClass);

            // Use reflection to call its main() method, and to
            // pass the arguments in.

            // Get a class representing the type of the main method's argument
            Class<?> mainArgType[] = { (new String[0]).getClass() };

            // Find the standard main method in the class
            Method main = clas.getMethod("main", mainArgType);

            // Create a list containing the arguments -- in this case,
            // an array of strings
            Object argsArray[] = { progArgs };

            // Call the method
            main.invoke(null, argsArray);

            Thread.sleep(9000);

        }
    }
}