From cfcdbe54802c69a7d731d8e1f48b858fe73a4452 Mon Sep 17 00:00:00 2001 From: Mark Wielaard Date: Sun, 30 Sep 2001 18:04:38 +0000 Subject: DataInput.java: Merge with Classpath. * java/io/DataInput.java: Merge with Classpath. * java/io/DataOutput.java: Idem. * java/io/FilenameFilter.java: Idem. * java/io/Serializable.java: Idem. * java/lang/Cloneable.java: Idem. * java/lang/Comparable.java: Idem. * java/lang/Runnable.java: Idem. * java/lang/reflect/Member.java: Idem. * java/net/ContentHandlerFactory.java: Idem. * java/net/FileNameMap.java: Idem. * java/net/SocketImplFactory.java: Idem. * java/net/SocketOptions.java: Idem. * java/net/URLStreamHandlerFactory.java: Idem. From-SVN: r45910 --- libjava/java/lang/Cloneable.java | 75 ++++++++++++++++++++++++++++++++++------ 1 file changed, 64 insertions(+), 11 deletions(-) (limited to 'libjava/java/lang/Cloneable.java') diff --git a/libjava/java/lang/Cloneable.java b/libjava/java/lang/Cloneable.java index 404bff914f9..1524409ee20 100644 --- a/libjava/java/lang/Cloneable.java +++ b/libjava/java/lang/Cloneable.java @@ -1,23 +1,76 @@ -/* Copyright (C) 1998, 1999 Free Software Foundation +/* Cloneable.java -- Interface for marking objects cloneable by Object.clone() + Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc. - This file is part of libgcj. +This file is part of GNU Classpath. -This software is copyrighted work licensed under the terms of the -Libgcj License. Please consult the file "LIBGCJ_LICENSE" for -details. */ +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA +02111-1307 USA. + +As a special exception, if you link this library with other files to +produce an executable, this library does not by itself cause the +resulting executable to be covered by the GNU General Public License. +This exception does not however invalidate any other reasons why the +executable file might be covered by the GNU General Public License. */ + + package java.lang; - -/** - * @author Warren Levy - * @date September 2, 1998. - */ + /* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3 * "The Java Language Specification", ISBN 0-201-63451-1 * plus online API docs for JDK 1.2 beta from http://www.javasoft.com. * Status: Believed complete and correct. */ - + +/** + * This interface should be implemented by classes wishing to + * support of override Object.clone(). The default + * behaviour of clone() performs a shallow copy, but + * subclasses often change this to perform a deep copy. Therefore, + * it is a good idea to document how deep your clone will go. + * If clone() is called on an object which does not + * implement this interface, a CloneNotSupportedException + * will be thrown. + *

+ * + * This interface is simply a tagging interface; it carries no + * requirements on methods to implement. However, it is typical for + * a Cloneable class to implement at least equals, + * hashCode, and clone, sometimes + * increasing the accessibility of clone to be public. The typical + * implementation of clone invokes super.clone() + * rather than a constructor, but this is not a requirement. + *

+ * + * If an object that implement Cloneable should not be cloned, + * simply override the clone method to throw a + * CloneNotSupportedException. + *

+ * + * All array types implement Cloneable, and have a public + * clone method that will never fail with a + * CloneNotSupportedException. + * + * @since 1.0 + * @author Paul Fisher + * @author Eric Blake + * @author Warren Levy + * + * @see Object#clone() + * @see CloneNotSupportedException + */ public interface Cloneable { + // Tagging interface only. } -- cgit v1.2.3