Back to index...

	/*
	* Copyright (c) 1996, 2005, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code 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
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	package java.io;


	/**
	* Abstract class for reading filtered character streams.
	* The abstract class <code>FilterReader</code> itself
	* provides default methods that pass all requests to
	* the contained stream. Subclasses of <code>FilterReader</code>
	* should override some of these methods and may also provide
	* additional methods and fields.
	*
	* @author Mark Reinhold
	* @since JDK1.1
	*/

	public abstract class FilterReader extends Reader {

	/**
	* The underlying character-input stream.
	*/
	protected Reader in;

	/**
	* Creates a new filtered reader.
	*
	* @param in a Reader object providing the underlying stream.
	* @throws NullPointerException if <code>in</code> is <code>null</code>
	*/
	protected FilterReader(Reader in) {
	super(in);
	this.in = in;
	}

	/**
	* Reads a single character.
	*
	* @exception IOException If an I/O error occurs
	*/
	public int read() throws IOException {
	return in.read();
	}

	/**
	* Reads characters into a portion of an array.
	*
	* @exception IOException If an I/O error occurs
	*/
	public int read(char cbuf[], int off, int len) throws IOException {
	return in.read(cbuf, off, len);
	}

	/**
	* Skips characters.
	*
	* @exception IOException If an I/O error occurs
	*/
	public long skip(long n) throws IOException {
	return in.skip(n);
	}

	/**
	* Tells whether this stream is ready to be read.
	*
	* @exception IOException If an I/O error occurs
	*/
	public boolean ready() throws IOException {
	return in.ready();
	}

	/**
	* Tells whether this stream supports the mark() operation.
	*/
	public boolean markSupported() {
	return in.markSupported();
	}

	/**
	* Marks the present position in the stream.
	*
	* @exception IOException If an I/O error occurs
	*/
	public void mark(int readAheadLimit) throws IOException {
	in.mark(readAheadLimit);
	}

	/**
	* Resets the stream.
	*
	* @exception IOException If an I/O error occurs
	*/
	public void reset() throws IOException {
	in.reset();
	}

	public void close() throws IOException {
	in.close();
	}

	}

Back to index...