StrictURLClassLoader


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33  
34  package edu.rice.cs.util.classloader;
35  
36  import java.net.URL  ;
37  import java.net.URLClassLoader  ;
38  
39  /**
40   * A class loader that only loads resources from the given URLs,
41   * and never from the system class loader or bootclasspath.
42   * Designed to be used in conjunction with a StickyClassLoader
43   * to ensure that classes are loaded from the URLs before anywhere
44   * else.
45   * 
46   * A regular URLClassLoader first looks at its parent, then looks
47   * at the bootclasspath, and only looks at the given URLs if the
48   * class or resource couldn't be found in the other two.
49   *
50   * @version $Id: StrictURLClassLoader.java 3901 2006-06-30 05:28:11Z rcartwright $
51   */
52  public class StrictURLClassLoader extends URLClassLoader   {
53  
54    /**
55     * Creates a StrictURLClassLoader
56     * @param urls List of URLs to use to load classes.
57     */
58    public StrictURLClassLoader(URL  [] urls) {
59      // Make sure this class loader has no parent
60      super(urls, null);
61    }
62    
63    /**
64     * Override getResource to not look at bootclasspath.
65     */
66    public URL   getResource(String   name) {
67      return findResource(name);
68    }
69  }
70
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