// -- Resource --     /**      * Finds the resource with the given name.  A resource is some data      * (images, audio, text, etc) that can be accessed by class code in a way      * that is independent of the location of the code.      *      * <p> The name of a resource is a '<tt>/</tt>'-separated path name that      * identifies the resource.      *      * <p> This method will first search the parent class loader for the      * resource; if the parent is <tt>null</tt> the path of the class loader      * built-in to the virtual machine is searched.  That failing, this method      * will invoke { #findResource(String)} to find the resource.  </p>      *      * @param  name      *         The resource name      *      * @return  A <tt>URL</tt> object for reading the resource, or      *          <tt>null</tt> if the resource could not be found or the invoker      *          doesn't have adequate  privileges to get the resource.      *      * @since  1.1      */     public URL getResource(String name) {     URL url;

    if (parent != null) {

     /×当一个装载器被请求装载某个类时，它首先委托自己的parent去装载，若parent能装载，则返回这个 类所对应的Class对象×/

        url = parent.getResource(name);

    } else {

/×若parent不能装载，则由parent的请求者去装载。×/

        url = getBootstrapResource(name);     }     if (url == null) {         url = findResource(name);     }     return url;     }