org.openorb.util.launcher
Class CompoundClassLoader

java.lang.Object
  |
  +--java.lang.ClassLoader
        |
        +--org.openorb.util.launcher.CompoundClassLoader

public final class CompoundClassLoader

extends ClassLoader

A compound class loader that combines a parent and secondary class loader.

Version:

$Revision: 1.3 $ $Date: 2004/02/10 22:25:31 $

Author:

Richard G Clark

Method Summary

protected Class	findClass(String name) Tries to find the class in the secondary class loader.
URL	getResource(String name) Tries to get the resource URL using the parent and secondary class loaders.
static ClassLoader	join(ClassLoader parent, ClassLoader secondary) Returns a class loader for the specified parent and secondary class loaders.

Methods inherited from class java.lang.ClassLoader

defineClass, defineClass, defineClass, definePackage, findLibrary, findLoadedClass, findResource, findResources, findSystemClass, getPackage, getPackages, getParent, getResourceAsStream, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, loadClass, resolveClass, setSigners

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

findClass

protected Class findClass(String name)
                   throws ClassNotFoundException

Tries to find the class in the secondary class loader.

Overrides:

findClass in class ClassLoader

Parameters:

name - the class name

Returns:

the resulting Class object

Throws:

ClassNotFoundException - if the class could not be found

getResource

public URL getResource(String name)

Tries to get the resource URL using the parent and secondary class loaders.

Overrides:

getResource in class ClassLoader

Parameters:

name - resource name

Returns:

a URL for reading the resource, or null if the resource could not be found or the caller doesn't have adequate privileges to get the resource.

join

public static ClassLoader join(ClassLoader parent,
                               ClassLoader secondary)

Returns a class loader for the specified parent and secondary class loaders. If the secondary class loader is null then parent is returned.

Parameters:

parent - the parent class loader

secondary - the secondary class loader, can be null

Returns:

a class loader