org.apache.commons.discovery.jdk

Class JDK12Hooks

java.lang.Object

org.apache.commons.discovery.jdk.JDKHooks

org.apache.commons.discovery.jdk.JDK12Hooks

public class JDK12Hooks
extends JDKHooks

JDK 1.2 Style Hooks implementation.

Field Summary

Fields

Modifier and Type	Field and Description
private static org.apache.commons.logging.Log	log Logger
private static java.lang.ClassLoader	systemClassLoader

Constructor Summary

Constructors

Constructor and Description
JDK12Hooks()

Method Summary

Modifier and Type	Method and Description
private static java.lang.ClassLoader	findSystemClassLoader() Find the System ClassLoader.
java.util.Enumeration<java.net.URL>	getResources(java.lang.ClassLoader loader, java.lang.String resourceName) Resolve resource with given names and make them available in the returned iterator.
private static java.util.Enumeration<java.net.URL>	getResourcesFromUrl(java.net.URL first, java.util.Enumeration<java.net.URL> rest) Enumerates resources URL.
java.lang.ClassLoader	getSystemClassLoader() The system class loader is available for JDK 1.2 or later, if certain security conditions are met.
java.lang.String	getSystemProperty(java.lang.String propName) Get the system property
java.lang.ClassLoader	getThreadContextClassLoader() The thread context class loader is available for JDK 1.2 or later, if certain security conditions are met.
static void	setLog(org.apache.commons.logging.Log _log) Deprecated. This method is not thread-safe

Methods inherited from class org.apache.commons.discovery.jdk.JDKHooks

getJDKHooks

Methods inherited from class java.lang.Object

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

Field Detail

log

private static org.apache.commons.logging.Log log

Logger

systemClassLoader

private static final java.lang.ClassLoader systemClassLoader

Constructor Detail

JDK12Hooks

public JDK12Hooks()

Method Detail

setLog

@Deprecated
public static void setLog(org.apache.commons.logging.Log _log)

Deprecated. This method is not thread-safe

Sets the Log for this class.

Parameters:

_log - This class Log

getSystemProperty

public java.lang.String getSystemProperty(java.lang.String propName)

Get the system property

Specified by:

getSystemProperty in class JDKHooks

Parameters:

propName - name of the property

Returns:

value of the property

getThreadContextClassLoader

public java.lang.ClassLoader getThreadContextClassLoader()

The thread context class loader is available for JDK 1.2 or later, if certain security conditions are met.

Specified by:

getThreadContextClassLoader in class JDKHooks

Returns:

The thread context class loader, if available. Otherwise return null.

getSystemClassLoader

public java.lang.ClassLoader getSystemClassLoader()

The system class loader is available for JDK 1.2 or later, if certain security conditions are met.

Specified by:

getSystemClassLoader in class JDKHooks

Returns:

The system class loader, if available. Otherwise return null.

getResources

public java.util.Enumeration<java.net.URL> getResources(java.lang.ClassLoader loader,
                                                        java.lang.String resourceName)
                                                 throws java.io.IOException

Resolve resource with given names and make them available in the returned iterator.

Specified by:

getResources in class JDKHooks

Parameters:

loader - The class loader used to resolve resources

resourceName - The resource name to resolve

Returns:

The iterator over the URL resolved resources

Throws:

java.io.IOException - if any error occurs while loading the resource

getResourcesFromUrl

private static java.util.Enumeration<java.net.URL> getResourcesFromUrl(java.net.URL first,
                                                                       java.util.Enumeration<java.net.URL> rest)

Enumerates resources URL.

Parameters:

first - The first URL in the enumeration sequence

rest - The URL enumeration

Returns:

A new resources URL enumeration

findSystemClassLoader

private static java.lang.ClassLoader findSystemClassLoader()

Find the System ClassLoader.

Returns:

The System ClassLoader