95 lines
2.2 KiB
Java
95 lines
2.2 KiB
Java
// ClassLoader.java - Define policies for loading Java classes.
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/* Copyright (C) 1998, 1999 Cygnus Solutions
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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package java.lang;
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import java.io.InputStream;
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import java.util.Hashtable;
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/**
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* @author Tom Tromey <tromey@cygnus.com>
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* @date October 28, 1998
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*/
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/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
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* Status: Just a stub; not useful at all.
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*/
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public abstract class ClassLoader
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{
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protected ClassLoader ()
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{
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cache = new Hashtable ();
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}
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protected final Class defineClass (String className, byte[] bytecode,
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int offset, int length)
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{
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throw new ClassFormatError ("defineClass unimplemented");
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}
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protected final Class defineClass (byte[] bytecodes,
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int offset, int length)
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{
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return defineClass (null, bytecodes, offset, length);
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}
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protected final Class findLoadedClass (String className)
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{
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return (Class) cache.get(className);
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}
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protected final Class findSystemClass (String className)
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throws ClassNotFoundException
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{
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Class c = system.findLoadedClass(className);
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system.resolveClass(c);
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return c;
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}
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// FIXME: Needs URL.
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// public URL getResource (String resName);
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public InputStream getResourceAsStream (String resName)
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{
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return null;
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}
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// FIXME: Needs URL.
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// public static final URL getSystemResource (String resName);
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public static final InputStream getSystemResourceAsStream (String resName)
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{
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return null;
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}
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protected abstract Class loadClass (String className, boolean resolve)
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throws ClassNotFoundException;
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public Class loadClass (String name) throws ClassNotFoundException
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{
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return loadClass (name, true);
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}
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protected final void resolveClass (Class c)
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{
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// Nothing for now.
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}
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protected final void setSigners (Class cl, Object[] signers)
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{
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// Nothing for now.
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}
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// Class cache.
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private Hashtable cache;
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// The system class loader. FIXME: should have an actual value
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private static final ClassLoader system = null;
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}
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