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Ehcache is an open source, standards-based cache used to boost performance,
offload the database and simplify scalability. Ehcache is robust, proven and full-featured and
this has made it the most widely-used Java-based cache.
//
// ========================================================================
// Copyright (c) 1995-2018 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.util;
import java.net.URL;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
/* ------------------------------------------------------------ */
/** ClassLoader Helper.
* This helper class allows classes to be loaded either from the
* Thread's ContextClassLoader, the classloader of the derived class
* or the system ClassLoader.
*
* Usage:
* public class MyClass {
* void myMethod() {
* ...
* Class c=Loader.loadClass(this.getClass(),classname);
* ...
* }
*
*
*/
public class Loader
{
/* ------------------------------------------------------------ */
public static URL getResource(String name)
{
ClassLoader loader=Thread.currentThread().getContextClassLoader();
return loader==null?ClassLoader.getSystemResource(name):loader.getResource(name);
}
/* ------------------------------------------------------------ */
/** Load a class.
* Load a class either from the thread context classloader or if none, the system
* loader
*
* @param name the name of the new class to load
* @return Class
* @throws ClassNotFoundException if not able to find the class
*/
@SuppressWarnings("rawtypes")
public static Class loadClass(String name)
throws ClassNotFoundException
{
ClassLoader loader=Thread.currentThread().getContextClassLoader();
return (loader==null ) ? Class.forName(name) : loader.loadClass(name);
}
/* ------------------------------------------------------------ */
/** Load a class.
* Load a class from the same classloader as the passed loadClass
, or if none
* then use {@link #loadClass(String)}
*
* @param loaderClass a similar class, belong in the same classloader of the desired class to load
* @param name the name of the new class to load
* @return Class
* @throws ClassNotFoundException if not able to find the class
*/
@SuppressWarnings("rawtypes")
public static Class loadClass(Class loaderClass, String name)
throws ClassNotFoundException
{
if (loaderClass!=null && loaderClass.getClassLoader()!=null)
return loaderClass.getClassLoader().loadClass(name);
return loadClass(name);
}
/* ------------------------------------------------------------ */
public static ResourceBundle getResourceBundle(String name,boolean checkParents,Locale locale)
throws MissingResourceException
{
ClassLoader loader=Thread.currentThread().getContextClassLoader();
return loader==null ? ResourceBundle.getBundle(name, locale) : ResourceBundle.getBundle(name, locale, loader);
}
}
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