/* * Copyright (c) 2003, 2006, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package sun.misc; import sun.reflect.ConstantPool;import sun.reflect.annotation.AnnotationType;import sun.nio.ch.Interruptible; public interface JavaLangAccess {    /** Return the constant pool for a class. */    ConstantPool getConstantPool(Class klass);     /**     * Set the AnnotationType instance corresponding to this class.     * (This method only applies to annotation types.)     */    void setAnnotationType(Class klass, AnnotationType annotationType);     /**     * Get the AnnotationType instance corresponding to this class.     * (This method only applies to annotation types.)     */    AnnotationType getAnnotationType(Class klass);     /**     * Returns the elements of an enum class or null if the     * Class object does not represent an enum type;     * the result is uncloned, cached, and shared by all callers.     */    <E extends Enum<E>> E[] getEnumConstantsShared(Class<E> klass);     /** Set thread's blocker field. */    void blockedOn(Thread t, Interruptible b);     /**     * Registers a shutdown hook.     *     * It is expected that this method with registerShutdownInProgress=true     * is only used to register DeleteOnExitHook since the first file     * may be added to the delete on exit list by the application shutdown     * hooks.     *     * @params slot  the slot in the shutdown hook array, whose element     *               will be invoked in order during shutdown     * @params registerShutdownInProgress true to allow the hook     *               to be registered even if the shutdown is in progress.     * @params hook  the hook to be registered     *     * @throw IllegalStateException if shutdown is in progress and     *          the slot is not valid to register.     */    void registerShutdownHook(int slot, boolean registerShutdownInProgress, Runnable hook);     /**     * Returns the number of stack frames represented by the given throwable.     */    int getStackTraceDepth(Throwable t);     /**     * Returns the ith StackTraceElement for the given throwable.     */    StackTraceElement getStackTraceElement(Throwable t, int i);}