jdk/src/share/classes/sun/dyn/empty/Empty.java
changeset 8823 7cd28219a1e4
parent 8717 f75a1efb1412
parent 8822 8145ab9f5f86
child 8824 0762fa26f813
child 9033 a88f5656f05d
equal deleted inserted replaced
8717:f75a1efb1412 8823:7cd28219a1e4
     1 /*
       
     2  * Copyright (c) 2009, 2010, 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.dyn.empty;
       
    27 
       
    28 /**
       
    29  * An empty class in an empty package.
       
    30  * Used as a proxy for unprivileged code, since making access checks
       
    31  * against it will only succeed against public methods in public types.
       
    32  * <p>
       
    33  * This class also stands (internally to sun.dyn) for the type of a
       
    34  * value that cannot be produced, because the expression of this type
       
    35  * always returns abnormally.  (Cf. Nothing in the closures proposal.)
       
    36  * @author jrose
       
    37  */
       
    38 public class Empty {
       
    39     private Empty() { throw new InternalError(); }
       
    40 }