jhelp.util.classLoader

Class JHelpClassLoader

java.lang.Object

java.lang.ClassLoader

jhelp.util.classLoader.JHelpClassLoader

public class JHelpClassLoader
extends java.lang.ClassLoader

Loader of class, can add several other class loader and also individual .class file

Last modification : 26 mai 2010
Version 0.0.0

Author:

JHelp

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.ArrayList<java.io.File>	files File list
private java.util.Hashtable<java.lang.String,java.lang.Class<?>>	loadedClass Already loaded classes
private java.util.ArrayList<java.lang.ClassLoader>	loaders Class loaders

Constructor Summary

Constructors

Constructor and Description
JHelpClassLoader() Constructs JHelpClassLoader
JHelpClassLoader(java.lang.ClassLoader parent) Constructs JHelpClassLoader

Method Summary

Methods

Modifier and Type	Method and Description
void	add(java.lang.ClassLoader classLoader) Add class loader
void	add(java.io.File file) Add a file.
java.net.URL	getResource(java.lang.String name) URL for a resources
java.io.InputStream	getResourceAsStream(java.lang.String name) Get resource as stream for read
java.util.Enumeration<java.net.URL>	getResources(java.lang.String name) List of resources of same name
private void	initialize() Initialize the loader
protected java.lang.Class<?>	loadClass(java.lang.String name, boolean resolve) Load a class

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findClass, findLibrary, findLoadedClass, findResource, findResources, findSystemClass, getClassLoadingLock, getPackage, getPackages, getParent, 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

Field Detail

files

private java.util.ArrayList<java.io.File> files

File list

loadedClass

private java.util.Hashtable<java.lang.String,java.lang.Class<?>> loadedClass

Already loaded classes

loaders

private java.util.ArrayList<java.lang.ClassLoader> loaders

Class loaders

Constructor Detail

JHelpClassLoader

public JHelpClassLoader()

Constructs JHelpClassLoader

JHelpClassLoader

public JHelpClassLoader(java.lang.ClassLoader parent)

Constructs JHelpClassLoader

Parameters:

parent - Class loader parent

Method Detail

initialize

private void initialize()

Initialize the loader

loadClass

protected java.lang.Class<?> loadClass(java.lang.String name,
                           boolean resolve)
                                throws java.lang.ClassNotFoundException

Load a class

Overrides:

loadClass in class java.lang.ClassLoader

Parameters:

name - Class complete name

resolve - Indicates if need to resolve

Returns:

Loaded class

Throws:

java.lang.ClassNotFoundException - If class is not found

See Also:

ClassLoader.loadClass(java.lang.String, boolean)

add

public void add(java.lang.ClassLoader classLoader)

Add class loader

Parameters:

classLoader - Class loader to add

add

public void add(java.io.File file)

Add a file.
The file must be in the same hierarchy as its package.
for exemple for : pack1.pack2.pack3.MyClasss the path must end like this : .../pack1/pack2/pack3/MyClass.class

Parameters:

file - File to add

getResource

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

URL for a resources

Overrides:

getResource in class java.lang.ClassLoader

Parameters:

name - Resource complete name

Returns:

URL of resource or null if not found

See Also:

ClassLoader.getResource(java.lang.String)

getResourceAsStream

public java.io.InputStream getResourceAsStream(java.lang.String name)

Get resource as stream for read

Overrides:

getResourceAsStream in class java.lang.ClassLoader

Parameters:

name - Resource complete name

Returns:

Stream for read or null if not found

See Also:

ClassLoader.getResourceAsStream(java.lang.String)

getResources

public java.util.Enumeration<java.net.URL> getResources(java.lang.String name)
                                                 throws java.io.IOException

List of resources of same name

Overrides:

getResources in class java.lang.ClassLoader

Parameters:

name - Resource complete name

Returns:

List of resource

Throws:

java.io.IOException - On reading problem

See Also:

ClassLoader.getResources(java.lang.String)