Load Class : ClassLoader « Reflection « Java

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Java » Reflection » ClassLoaderScreenshots 
Load Class
    

// $Id: ReflectionHelper.java 16271 2009-04-07 20:20:12Z hardy.ferentschik $
/*
* 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.
*/


import java.beans.Introspector;
import java.lang.annotation.Annotation;
import java.lang.reflect.AccessibleObject;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Member;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.lang.reflect.WildcardType;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.util.Map;


/**
 * Some reflection utility methods.
 *
 @author Hardy Ferentschik
 */
public class ReflectionHelper {

  public static Class<?> loadClass(String name, Class<?> callerthrows ClassNotFoundException {
    try {
      //try context classloader, if fails try caller classloader
      ClassLoader loader = Thread.currentThread().getContextClassLoader();
      if loader != null ) {
        return loader.loadClassname );
      }
    }
    catch ClassNotFoundException e ) {
      //trying caller classloader
      if caller == null ) {
        throw e;
      }
    }
    return Class.forNamename, true, caller.getClassLoader() );
  }
}

   
    
    
    
  
Related examples in the same category
1. Determining from Where a Class Was Loaded
2. Loading a Class That Is Not on the Classpath
3. Dynamically Reloading a Modified Class
4. Get the path from where a class is loaded
5. Using the forName() method
6. Unqualified names
7. Return the context classloader.
8. Jar Class Loader
9. Zip Class Loader
10. Load class from Thread's ContextClassLoader, classloader of derived class or the system ClassLoader
11. Various Class Loader utilities
12. Load classes
13. Class Finder
14. Class For Name
15. Context ClassLoader
16. Analyze ClassLoader hierarchy for any given object or class loader
17. A class loader which loads classes using a searchlist of other classloaders
18. Equivalently to invoking Thread.currentThread().getContextClassLoader().loadClass(className); but it supports primitive types and array classes of object types or primitive types.
19. A class to simplify access to resources through the classloader
20. Get a compatible constructor for the given value type
21. Force the given class to be loaded fully.
22. does Class Exist
23. Java interpreter replacement
24. Utility to essentially do Class forName and allow configurable Classloaders.
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