ClassUtil


1   /**
2    *
3    * Magnolia and its source-code is licensed under the LGPL.
4    * You may copy, adapt, and redistribute this file for commercial or non-commercial use.
5    * When copying, adapting, or redistributing this document in keeping with the guidelines above,
6    * you are required to provide proper attribution to obinary.
7    * If you reproduce or distribute the document without making any substantive modifications to its content,
8    * please use the following attribution line:
9    *
10   * Copyright 1993-2006 obinary Ltd. (http://www.obinary.com) All rights reserved.
11   *
12   */
13  package info.magnolia.cms.util;
14  
15  import org.slf4j.Logger;
16  import org.slf4j.LoggerFactory;
17  
18  
19  /**
20   * Utility methods for classes.
21   * @author Fabrizio Giustina
22   * @version $Revision: 7343 $ ($Author: philipp $)
23   */
24  public final class ClassUtil {
25  
26      /**
27       * Logger.
28       */
29      private static Logger log = LoggerFactory.getLogger(ClassUtil.class);
30  
31      /**
32       * Don't instantiate.
33       */
34      private ClassUtil() {
35          // unused
36      }
37  
38      /**
39       * Load a class trying both with the standard that with the thread classloader.
40       * @param className class name
41       * @return loaded class
42       * @throws ClassNotFoundException if the given class can't be loaded by both classloaders.
43       */
44      public static Class   classForName(String   className) throws ClassNotFoundException   {
45          Class   loadedClass;
46          try {
47              loadedClass = Class.forName(className);
48          }
49          catch (ClassNotFoundException   e) {
50              loadedClass = Class.forName(className, true, Thread.currentThread().getContextClassLoader());
51          }
52          return loadedClass;
53      }
54  
55      /**
56       * Shortcut for <code>ClassUtil.classForName(className).newInstance()</code>
57       * @param className class name
58       * @return instance of the given class
59       * @throws InstantiationException exception thrown by newInstance()
60       * @throws IllegalAccessException exception thrown by newInstance()
61       * @throws ClassNotFoundException if the given class can't be loaded by both classloaders
62       */
63      public static Object   newInstance(String   className) throws InstantiationException  , IllegalAccessException  ,
64          ClassNotFoundException   {
65          return classForName(className).newInstance();
66      }
67  }
68
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