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-/* Appendable.java -- Something to which characters can be appended
- Copyright (C) 2004 Free Software Foundation
-
-This file is part of GNU Classpath.
-
-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., 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-package java.lang;
-
-import java.io.IOException;
-
-/**
- * <p>
- * An <code>Appendable</code> object is one to which a sequence of Unicode
- * characters can be added. The appended characters must be valid Unicode
- * characters, and may include supplementary characters, composed of multiple
- * 16-bit <code>char</code> values.
- * </p>
- * <p>
- * The behaviour of the <code>Appendable</code> object is heavily dependent
- * on the particular implementation being used. Some implementations may be
- * thread-safe, while others may not. Likewise, some implementing classes
- * may produce errors which aren't propogated to the invoking class, due
- * to differences in the error handling used.
- * </p>
- * <p>
- * <strong>Note</strong>: implementation of this interface is required for
- * any class that wishes to receive data from a <code>Formatter</code>
- * instance.
- * </p>
- *
- * @author Tom Tromey (tromey@redhat.com)
- * @author Andrew John Hughes (gnu_andrew@member.fsf.org)
- * @since 1.5
- */
-public interface Appendable
-{
-
- /**
- * Appends the Unicode character, c, to this <code>Appendable</code>
- * object.
- *
- * @param c the character to append.
- * @return a reference to this object.
- * @throws IOException if an I/O error occurs.
- */
- Appendable append(char c)
- throws IOException;
-
- /**
- * Appends the specified sequence of Unicode characters to this
- * <code>Appendable</code> object. The entire sequence may not
- * be appended, if constrained by the underlying implementation.
- * For example, a buffer may reach its size limit before the entire
- * sequence is appended.
- *
- * @param seq the character sequence to append. If seq is null,
- * then the string "null" (the string representation of null)
- * is appended.
- * @return a reference to this object.
- * @throws IOException if an I/O error occurs.
- */
- Appendable append(CharSequence seq)
- throws IOException;
-
- /**
- * Appends the specified subsequence of Unicode characters to this
- * <code>Appendable</code> object, starting and ending at the specified
- * positions within the sequence. The entire sequence may not
- * be appended, if constrained by the underlying implementation.
- * For example, a buffer may reach its size limit before the entire
- * sequence is appended. The behaviour of this method matches the
- * behaviour of <code>append(seq.subSequence(start,end))</code> when
- * the sequence is not null.
- *
- * @param seq the character sequence to append. If seq is null,
- * then the string "null" (the string representation of null)
- * is appended.
- * @param start the index of the first Unicode character to use from
- * the sequence.
- * @param end the index of the last Unicode character to use from the
- * sequence.
- * @return a reference to this object.
- * @throws IOException if an I/O error occurs.
- * @throws IndexOutOfBoundsException if either of the indices are negative,
- * the start index occurs after the end index, or the end index is
- * beyond the end of the sequence.
- */
- Appendable append(CharSequence seq, int start, int end)
- throws IOException;
-
-}