org.jboss.weld.integration.webtier.util.Reflections Maven / Gradle / Ivy
/*
* JBoss, Home of Professional Open Source
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jboss.weld.integration.webtier.util;
/**
* @author pmuir
*
*/
public class Reflections
{
public static T newInstance(String className)
{
try
{
return Reflections.classForName(className).newInstance();
}
catch (InstantiationException e)
{
throw new IllegalArgumentException("Cannot instantiate instance of " + className + " with no-argument constructor", e);
}
catch (IllegalAccessException e)
{
throw new IllegalArgumentException("Cannot instantiate instance of " + className + " with no-argument constructor", e);
}
}
public static Class classForName(String name)
{
try
{
if (Thread.currentThread().getContextClassLoader() != null)
{
Class> c = Thread.currentThread().getContextClassLoader().loadClass(name);
@SuppressWarnings("unchecked")
Class clazz = (Class) c;
return clazz;
}
else
{
Class> c = Class.forName(name);
@SuppressWarnings("unchecked")
Class clazz = (Class) c;
return clazz;
}
}
catch (ClassNotFoundException e)
{
throw new IllegalArgumentException("Cannot load class for " + name, e);
}
catch (NoClassDefFoundError e)
{
throw new IllegalArgumentException("Cannot load class for " + name, e);
}
}
}