org.glassfish.grizzly.http.server.util

Class ClassLoaderUtil

java.lang.Object

org.glassfish.grizzly.http.server.util.ClassLoaderUtil

public class ClassLoaderUtil
extends Object

Simple ClassLoader utility.

Author:

Jeanfrancois Arcand

Constructor Summary

Constructors

Constructor and Description
ClassLoaderUtil()

Method Summary

Modifier and Type	Method and Description
static ClassLoader	createClassloader(File libDir, ClassLoader cl) Deprecated. removal candidate, never used
static URLClassLoader	createURLClassLoader(String dirPath) Construct a URLClassLoader based on a canonical file location.
static URLClassLoader	createURLClassLoader(String location, ClassLoader parent) Construct a URLClassLoader based on a canonical file location.
static Object	load(String clazzName) Load a class using the current {link Thread#getContextClassLoader}
static Object	load(String clazzName, ClassLoader classLoader) Load a class using the provided ClassLoader

Methods inherited from class java.lang.Object

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

Constructor Detail

ClassLoaderUtil

public ClassLoaderUtil()

Method Detail

createClassloader

public static ClassLoader createClassloader(File libDir,
                                            ClassLoader cl)
                                     throws IOException

Deprecated. removal candidate, never used

Create a class loader that can load classes from the specified file directory. The file directory must contains .jar or .zip

Parameters:

libDir - Directory with jars.

cl - the parent ClassLoader, or null if none.

Returns:

A URLClassLoader that can load classes from a directory that contains jar and zip files.

Throws:

IOException - I/O fail

createURLClassLoader

public static URLClassLoader createURLClassLoader(String dirPath)
                                           throws IOException

Construct a URLClassLoader based on a canonical file location.

Parameters:

dirPath - a canonical path location

Returns:

a URLClassLoader

Throws:

IOException - I/O

MalformedURLException - Invalid URL

createURLClassLoader

public static URLClassLoader createURLClassLoader(String location,
                                                  ClassLoader parent)
                                           throws IOException

Construct a URLClassLoader based on a canonical file location.

Parameters:

location - a canonical path location

parent - ClassLoader to be used as parent for returned one.

Returns:

a URLClassLoader

Throws:

IOException - I/O

MalformedURLException - Invalid URL

load

public static Object load(String clazzName)

Load a class using the current {link Thread#getContextClassLoader}

Parameters:

clazzName - The name of the class you want to load.

Returns:

an instance of clazzname

load

public static Object load(String clazzName,
                          ClassLoader classLoader)

Load a class using the provided ClassLoader

Parameters:

clazzName - The name of the class you want to load.

classLoader - A classloader to use for loading a class.

Returns:

an instance of clazzname