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    1   /*
    2    * Copyright (c) 2003, 2006, Oracle and/or its affiliates. All rights reserved.
    3    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
    4    *
    5    * This code is free software; you can redistribute it and/or modify it
    6    * under the terms of the GNU General Public License version 2 only, as
    7    * published by the Free Software Foundation.  Oracle designates this
    8    * particular file as subject to the "Classpath" exception as provided
    9    * by Oracle in the LICENSE file that accompanied this code.
   10    *
   11    * This code is distributed in the hope that it will be useful, but WITHOUT
   12    * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   13    * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   14    * version 2 for more details (a copy is included in the LICENSE file that
   15    * accompanied this code).
   16    *
   17    * You should have received a copy of the GNU General Public License version
   18    * 2 along with this work; if not, write to the Free Software Foundation,
   19    * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   20    *
   21    * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   22    * or visit www.oracle.com if you need additional information or have any
   23    * questions.
   24    */
   25   
   26   package sun.misc;
   27   
   28   import sun.reflect.ConstantPool;
   29   import sun.reflect.annotation.AnnotationType;
   30   import sun.nio.ch.Interruptible;
   31   
   32   public interface JavaLangAccess {
   33       /** Return the constant pool for a class. */
   34       ConstantPool getConstantPool(Class klass);
   35   
   36       /**
   37        * Set the AnnotationType instance corresponding to this class.
   38        * (This method only applies to annotation types.)
   39        */
   40       void setAnnotationType(Class klass, AnnotationType annotationType);
   41   
   42       /**
   43        * Get the AnnotationType instance corresponding to this class.
   44        * (This method only applies to annotation types.)
   45        */
   46       AnnotationType getAnnotationType(Class klass);
   47   
   48       /**
   49        * Returns the elements of an enum class or null if the
   50        * Class object does not represent an enum type;
   51        * the result is uncloned, cached, and shared by all callers.
   52        */
   53       <E extends Enum<E>> E[] getEnumConstantsShared(Class<E> klass);
   54   
   55       /** Set thread's blocker field. */
   56       void blockedOn(Thread t, Interruptible b);
   57   
   58       /**
   59        * Registers a shutdown hook.
   60        *
   61        * It is expected that this method with registerShutdownInProgress=true
   62        * is only used to register DeleteOnExitHook since the first file
   63        * may be added to the delete on exit list by the application shutdown
   64        * hooks.
   65        *
   66        * @params slot  the slot in the shutdown hook array, whose element
   67        *               will be invoked in order during shutdown
   68        * @params registerShutdownInProgress true to allow the hook
   69        *               to be registered even if the shutdown is in progress.
   70        * @params hook  the hook to be registered
   71        *
   72        * @throw IllegalStateException if shutdown is in progress and
   73        *          the slot is not valid to register.
   74        */
   75       void registerShutdownHook(int slot, boolean registerShutdownInProgress, Runnable hook);
   76   
   77       /**
   78        * Returns the number of stack frames represented by the given throwable.
   79        */
   80       int getStackTraceDepth(Throwable t);
   81   
   82       /**
   83        * Returns the ith StackTraceElement for the given throwable.
   84        */
   85       StackTraceElement getStackTraceElement(Throwable t, int i);
   86   }

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