de.bb.util

Class ZipClassLoader

java.lang.Object

java.lang.ClassLoader

de.bb.util.ZipClassLoader

public class ZipClassLoader
extends java.lang.ClassLoader

Extends URLClassLoader and provides more functionality.

Constructor Summary

Constructors

Constructor and Description
ZipClassLoader() Default constructor.
ZipClassLoader(java.lang.ClassLoader parent) Creates a new ZipClassLoader and provides a parent class loader.
ZipClassLoader(java.lang.String classPath) Creates a new ZipClassLoader and provides a class path.
ZipClassLoader(java.lang.String classPath, java.lang.ClassLoader parent) Creates a new ZipClassLoader and provides an initial class path and a parent class loader.

Method Summary

Methods

Modifier and Type	Method and Description
void	addPath(java.lang.String classPath) parses and applies the path.
void	addURL(java.net.URL url) Add the url to the search path.
java.util.Enumeration<java.net.URL>	findResources(java.lang.String fileName) Searches all resources with this file name, and returns them as an Enumeration.
java.util.Enumeration<java.net.URL>	findResources(java.lang.String fileName, java.util.Set<java.net.URL> filter) Searches all resources with this file name, and returns them as an Enumeration.
java.lang.String	getClassPath() Returns the classloader's class path as String.
java.net.URL	getResource(java.lang.String fileName)
java.net.URL	getResource(java.lang.String fileName, java.util.Set<java.net.URL> filter)
java.io.InputStream	getResourceAsStream(java.lang.String fileName) Get an InputStream for the specified file.
java.io.InputStream	getResourceAsStream(java.lang.String fileName, java.util.Set<java.net.URL> filter)
java.io.InputStream	getResourceAsStream(java.net.URL url) Get an InputStream for the specified URL.
java.net.URL[]	getURLs() Return an array containing all URLs in search order.
java.lang.String[]	list(java.lang.String mask) Returns an array with all files matching the search mask.
java.lang.String[]	list(java.lang.String mask, java.util.Set<java.net.URL> filter)
static byte[]	loadBytes(java.io.InputStream in) Load the bytes for a given InputStream.
java.lang.Class<?>	loadClass(java.lang.String name, boolean resolve) Load a specified class and resolve it, if wanted.
java.lang.Class<?>	loadClass(java.lang.String name, boolean resolve, java.util.Set<java.net.URL> filter)
java.lang.Class<?>	loadClass(java.lang.String className, java.io.InputStream in) Load a class by classname and InputStream.
static java.lang.String	makeClassFileName(java.lang.String className) Convert a class name into path name.
static java.net.URL	path2URL(java.lang.String path) add the path to the class path.
java.lang.String	toString()

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findClass, findLibrary, findLoadedClass, findResource, 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, wait, wait, wait

Constructor Detail

ZipClassLoader

public ZipClassLoader()

Default constructor.

ZipClassLoader

public ZipClassLoader(java.lang.String classPath)
               throws java.net.MalformedURLException

Creates a new ZipClassLoader and provides a class path.

Parameters:

classPath - the initial class path

Throws:

java.net.MalformedURLException

ZipClassLoader

public ZipClassLoader(java.lang.ClassLoader parent)

Creates a new ZipClassLoader and provides a parent class loader.

Parameters:

parent - the parent class loader.

ZipClassLoader

public ZipClassLoader(java.lang.String classPath,
              java.lang.ClassLoader parent)
               throws java.net.MalformedURLException

Creates a new ZipClassLoader and provides an initial class path and a parent class loader.

Parameters:

classPath - the initial class path

parent - the parent class loader

Throws:

java.net.MalformedURLException

Method Detail

addPath

public void addPath(java.lang.String classPath)
             throws java.net.MalformedURLException

parses and applies the path.

Parameters:

classPath - the classpath

Throws:

java.net.MalformedURLException

list

public java.lang.String[] list(java.lang.String mask)

Returns an array with all files matching the search mask.

Parameters:

mask - a search mask, may contain one wild star '*'

Returns:

an array of matching URLs as String.

list

public java.lang.String[] list(java.lang.String mask,
                      java.util.Set<java.net.URL> filter)

getClassPath

public java.lang.String getClassPath()

Returns the classloader's class path as String.

Returns:

the classloader's class path as String.

path2URL

public static java.net.URL path2URL(java.lang.String path)
                             throws java.net.MalformedURLException

add the path to the class path.

Parameters:

path - a class lookup path as folder or JAR file

Throws:

java.net.MalformedURLException

getURLs

public java.net.URL[] getURLs()

Return an array containing all URLs in search order.

Returns:

an array containing all URLs.

addURL

public void addURL(java.net.URL url)

Add the url to the search path.

Parameters:

url - a url - either path or JAR

loadClass

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

Load a specified class and resolve it, if wanted.

Overrides:

loadClass in class java.lang.ClassLoader

Parameters:

name - of the class.

resolve - flag whether class is to resolve.

Returns:

the loaded class.

Throws:

java.lang.ClassNotFoundException - if class was not loaded.

loadClass

public java.lang.Class<?> loadClass(java.lang.String name,
                           boolean resolve,
                           java.util.Set<java.net.URL> filter)
                             throws java.lang.ClassNotFoundException

Throws:

java.lang.ClassNotFoundException

loadClass

public java.lang.Class<?> loadClass(java.lang.String className,
                           java.io.InputStream in)
                             throws java.lang.ClassNotFoundException

Load a class by classname and InputStream.

Parameters:

className - the classname

in - the input Stream

Returns:

the class

Throws:

java.lang.ClassNotFoundException - if the class cannot be defined.

makeClassFileName

public static java.lang.String makeClassFileName(java.lang.String className)

Convert a class name into path name.

loadBytes

public static byte[] loadBytes(java.io.InputStream in)
                        throws java.io.IOException

Load the bytes for a given InputStream.

Parameters:

in - the InputStream to read from.

Returns:

a new allocated byte array containing the read data.

Throws:

java.io.IOException - on error

getResourceAsStream

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

Get an InputStream for the specified file.

Overrides:

getResourceAsStream in class java.lang.ClassLoader

Parameters:

fileName - the file name.

Returns:

an InputStream on success or null on error.

getResourceAsStream

public java.io.InputStream getResourceAsStream(java.lang.String fileName,
                                      java.util.Set<java.net.URL> filter)

getResourceAsStream

public java.io.InputStream getResourceAsStream(java.net.URL url)

Get an InputStream for the specified URL.

Parameters:

url - an URL for a file, also file inside a JAR

Returns:

an InputStream on success or null on error.

getResource

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

Overrides:

getResource in class java.lang.ClassLoader

getResource

public java.net.URL getResource(java.lang.String fileName,
                       java.util.Set<java.net.URL> filter)

findResources

public java.util.Enumeration<java.net.URL> findResources(java.lang.String fileName)

Searches all resources with this file name, and returns them as an Enumeration.

Overrides:

findResources in class java.lang.ClassLoader

Parameters:

fileName - the file name

Returns:

an Enumeration containing the URLs for the specified file name.

findResources

public java.util.Enumeration<java.net.URL> findResources(java.lang.String fileName,
                                                java.util.Set<java.net.URL> filter)

Searches all resources with this file name, and returns them as an Enumeration. But only searches the filtered JARs

Parameters:

fileName - the file name

filter - the URLs to search

Returns:

an Enumeration containing the URLs for the specified file name.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object