1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/classes/jdk/Exported.java Wed Apr 27 01:34:52 2016 +0800
1.3 @@ -0,0 +1,77 @@
1.4 +/*
1.5 + * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation. Oracle designates this
1.11 + * particular file as subject to the "Classpath" exception as provided
1.12 + * by Oracle in the LICENSE file that accompanied this code.
1.13 + *
1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 + * version 2 for more details (a copy is included in the LICENSE file that
1.18 + * accompanied this code).
1.19 + *
1.20 + * You should have received a copy of the GNU General Public License version
1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 + *
1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.25 + * or visit www.oracle.com if you need additional information or have any
1.26 + * questions.
1.27 + */
1.28 +
1.29 +package jdk;
1.30 +
1.31 +import java.lang.annotation.*;
1.32 +
1.33 +/**
1.34 + * Indicates whether or not a JDK specific type or package is an
1.35 + * exported part of the JDK suitable for use outside of the JDK
1.36 + * implementation itself.
1.37 + *
1.38 + * This annotation should only be applied to types and packages
1.39 + * <em>outside</em> of the Java SE namespaces of {@code java.*} and
1.40 + * {@code javax.*} packages. For example, certain portions of {@code
1.41 + * com.sun.*} are official parts of the JDK meant to be generally
1.42 + * usable while other portions of {@code com.sun.*} are not. This
1.43 + * annotation type allows those portions to be easily and
1.44 + * programmatically distinguished.
1.45 + *
1.46 + * <p>If in one release a type or package is
1.47 + * <code>@Exported(true)</code>, in a subsequent major release such a
1.48 + * type or package can transition to <code>@Exported(false)</code>.
1.49 + *
1.50 + * <p>If a type or package is <code>@Exported(false)</code> in a
1.51 + * release, it may be removed in a subsequent major release.
1.52 + *
1.53 + * <p>If a top-level type has an <code>@Exported</code> annotation,
1.54 + * any nested member types with the top-level type should have an
1.55 + * <code>@Exported</code> annotation with the same value.
1.56 + *
1.57 + * (In exceptional cases, if a nested type is going to be removed
1.58 + * before its enclosing type, the nested type's could be
1.59 + * <code>@Exported(false)</code> while its enclosing type was
1.60 + * <code>@Exported(true)</code>.)
1.61 + *
1.62 + * Likewise, if a package has an <code>@Exported</code> annotation,
1.63 + * top-level types within that package should also have an
1.64 + * <code>@Exported</code> annotation.
1.65 + *
1.66 + * Sometimes a top-level type may have a different
1.67 + * <code>@Exported</code> value than its package.
1.68 + *
1.69 + * @since 1.8
1.70 + */
1.71 +@Documented
1.72 +@Retention(RetentionPolicy.RUNTIME)
1.73 +@Target({ElementType.TYPE, ElementType.PACKAGE})
1.74 +@Exported
1.75 +public @interface Exported {
1.76 + /**
1.77 + * Whether or not the annotated type or package is an exported part of the JDK.
1.78 + */
1.79 + boolean value() default true;
1.80 +}
