gomp-20050608-branch/libjava/gnu/gcj/runtime/ExtensionClassLoader.java

   1 /* Copyright (C) 1999, 2001, 2002, 2003, 2004, 2005  Free Software Foundation
   2
   3    This file is part of libgcj.
   4
   5 This software is copyrighted work licensed under the terms of the
   6 Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
   7 details.  */
   8
   9 /* Author: Kresten Krab Thorup <krab@gnu.org>  */
  10
  11 package gnu.gcj.runtime;
  12
  13 import java.net.URL;
  14
  15 // The extension loader for libgcj.  Class loader bootstrap is a bit
  16 // tricky, see prims.cc and SystemClassLoader for some details.
  17 public final class ExtensionClassLoader extends HelperClassLoader
  18 {
  19   private ExtensionClassLoader ()
  20   {
  21   }
  22
  23   private void init()
  24   {
  25     addDirectoriesFromProperty("java.ext.dirs");
  26   }
  27
  28   // This can be package-private because we only call it from native
  29   // code during startup.
  30   static void initialize ()
  31   {
  32     instance.init();
  33     system_instance.init();
  34   }
  35
  36   // The only ExtensionClassLoader that can exist.
  37   static ExtensionClassLoader instance = new ExtensionClassLoader();
  38   // The system class loader.
  39   static SystemClassLoader system_instance = new SystemClassLoader(instance);
  40 }