Package org.glassfish.common.util

Class GlassfishUrlClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

org.glassfish.common.util.GlassfishUrlClassLoader

All Implemented Interfaces:

Closeable, AutoCloseable

Direct Known Subclasses:

ASURLClassLoader

public class GlassfishUrlClassLoader
extends URLClassLoader

URLClassLoader with logs and overriden toString() method so it prints list of managed URLs.

This classloader is Closeable! As of JDK11+ close() just closes any unclosed resource streams which could survive the class loader.

Author:

David Matejcek

Constructor Summary

Constructors

Constructor	Description
GlassfishUrlClassLoader(URL[] urls)	Initializes the internal classpath.
GlassfishUrlClassLoader(URL[] urls, ClassLoader parent)	Initializes the internal classpath.
GlassfishUrlClassLoader(URL[] urls, ClassLoader parent, URLStreamHandlerFactory factory)	Initializes the internal classpath.

Method Summary

Modifier and Type	Method	Description
void	addURL(URL url)
void	close()
protected Package	definePackage(String name, String specTitle, String specVersion, String specVendor, String implTitle, String implVersion, String implVendor, URL sealBase)
protected Class<?>	findClass(String name)
URL	findResource(String name)
Enumeration<URL>	findResources(String name)
InputStream	getResourceAsStream(String name)
protected Class<?>	loadClass(String name, boolean resolve)
String	toString()	Returns class name, hash code and list of managed urls.

Methods inherited from class java.net.URLClassLoader

definePackage, getPermissions, getURLs, newInstance, newInstance

Methods inherited from class java.security.SecureClassLoader

defineClass, defineClass

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, findClass, findLibrary, findLoadedClass, findResource, findSystemClass, getClassLoadingLock, getDefinedPackage, getDefinedPackages, getName, getPackage, getPackages, getParent, getPlatformClassLoader, getResource, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, getUnnamedModule, isRegisteredAsParallelCapable, loadClass, registerAsParallelCapable, resolveClass, resources, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

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

Constructor Details

GlassfishUrlClassLoader

public GlassfishUrlClassLoader(URL[] urls)

Initializes the internal classpath.

Parameters:

urls -

GlassfishUrlClassLoader

public GlassfishUrlClassLoader(URL[] urls,
 ClassLoader parent)

Initializes the internal classpath.

Parameters:

urls -

parent -

GlassfishUrlClassLoader

public GlassfishUrlClassLoader(URL[] urls,
 ClassLoader parent,
 URLStreamHandlerFactory factory)

Initializes the internal classpath.

Parameters:

urls -

parent -

factory -

Method Details

addURL

public void addURL(URL url)

Overrides:

addURL in class URLClassLoader

findClass

protected Class<?> findClass(String name)
                      throws ClassNotFoundException

Overrides:

findClass in class URLClassLoader

Throws:

ClassNotFoundException

findResource

public URL findResource(String name)

Overrides:

findResource in class URLClassLoader

findResources

public Enumeration<URL> findResources(String name)
                               throws IOException

Overrides:

findResources in class URLClassLoader

Throws:

IOException

getResourceAsStream

public InputStream getResourceAsStream(String name)

Overrides:

getResourceAsStream in class URLClassLoader

loadClass

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

Overrides:

loadClass in class ClassLoader

Throws:

ClassNotFoundException

definePackage

protected Package definePackage(String name,
 String specTitle,
 String specVersion,
 String specVendor,
 String implTitle,
 String implVersion,
 String implVendor,
 URL sealBase)

Overrides:

definePackage in class ClassLoader

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class URLClassLoader

Throws:

IOException

toString

public String toString()

Returns class name, hash code and list of managed urls.

Overrides:

toString in class Object