jfun.jaskell.classloader

Class MyClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

jfun.jaskell.classloader.MyClassLoader

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class MyClassLoader
extends java.net.URLClassLoader

The ClassLoader implementation that can accept additional URL for class path.
It also queries a LoadingPolicy object to decide its class loading behavior.

Zephyr Business Solution

Author:

Ben Yu

Constructor Summary

Constructors

Constructor and Description
MyClassLoader(java.io.File[] files, java.lang.ClassLoader parent, LoadingPolicy ipf)
MyClassLoader(java.io.File[] files, LoadingPolicy ipf)
MyClassLoader(java.net.URL[] urls, java.lang.ClassLoader parent, LoadingPolicy ipf)
MyClassLoader(java.net.URL[] urls, java.lang.ClassLoader parent, java.net.URLStreamHandlerFactory factory, LoadingPolicy ipf)
MyClassLoader(java.net.URL[] urls, LoadingPolicy ipf)

Method Summary

Methods

Modifier and Type	Method and Description
java.util.Enumeration	enumerateResources(java.lang.String name) Returns a java.util.Enumeration object that enumerates all resource URL's for a given resource name.
java.lang.Class	findClass(java.lang.String name) Finds a class by name.
java.net.URL	findResource(java.lang.String name) Find a resource.
java.util.Enumeration	findResources(java.lang.String name)
java.net.URL	getResource(java.lang.String name)
java.lang.Class	loadClass(java.lang.String name, boolean resolve)
java.lang.Class	lookupClass(java.lang.String name)

Methods inherited from class java.net.URLClassLoader

addURL, close, definePackage, getPermissions, getResourceAsStream, getURLs, newInstance, newInstance

Methods inherited from class java.security.SecureClassLoader

defineClass, defineClass

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findLibrary, findLoadedClass, findSystemClass, getClassLoadingLock, getPackage, getPackages, getParent, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, registerAsParallelCapable, resolveClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

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

Constructor Detail

MyClassLoader

public MyClassLoader(java.net.URL[] urls,
             java.lang.ClassLoader parent,
             java.net.URLStreamHandlerFactory factory,
             LoadingPolicy ipf)

MyClassLoader

public MyClassLoader(java.net.URL[] urls,
             java.lang.ClassLoader parent,
             LoadingPolicy ipf)

MyClassLoader

public MyClassLoader(java.net.URL[] urls,
             LoadingPolicy ipf)

MyClassLoader

public MyClassLoader(java.io.File[] files,
             java.lang.ClassLoader parent,
             LoadingPolicy ipf)
              throws java.net.MalformedURLException

Throws:

java.net.MalformedURLException

MyClassLoader

public MyClassLoader(java.io.File[] files,
             LoadingPolicy ipf)
              throws java.net.MalformedURLException

Throws:

java.net.MalformedURLException

Method Detail

findClass

public java.lang.Class findClass(java.lang.String name)
                          throws java.lang.ClassNotFoundException

Finds a class by name.

Overrides:

findClass in class java.net.URLClassLoader

Parameters:

name - the class name.

Returns:

the Class object.

Throws:

java.lang.ClassNotFoundException - when the class cannot be found.

findResource

public java.net.URL findResource(java.lang.String name)

Find a resource.

Overrides:

findResource in class java.net.URLClassLoader

Parameters:

name - the resource name.

Returns:

the URL for the resource.

enumerateResources

public java.util.Enumeration enumerateResources(java.lang.String name)
                                         throws java.io.IOException

Returns a java.util.Enumeration object that enumerates all resource URL's for a given resource name.

Parameters:

name - the resource name.

Returns:

the Enumeration object.

Throws:

java.io.IOException - when fails with io error.

lookupClass

public java.lang.Class lookupClass(java.lang.String name)
                            throws java.lang.ClassNotFoundException

Throws:

java.lang.ClassNotFoundException

loadClass

public java.lang.Class loadClass(java.lang.String name,
                        boolean resolve)
                          throws java.lang.ClassNotFoundException

Overrides:

loadClass in class java.lang.ClassLoader

Throws:

java.lang.ClassNotFoundException

getResource

public java.net.URL getResource(java.lang.String name)

Overrides:

getResource in class java.lang.ClassLoader

findResources

public java.util.Enumeration findResources(java.lang.String name)
                                    throws java.io.IOException

Overrides:

findResources in class java.net.URLClassLoader

Throws:

java.io.IOException