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FilterReader.java
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1997-08-30
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/*
* @(#)FilterReader.java 1.5 97/01/27
*
* Copyright (c) 1995, 1996 Sun Microsystems, Inc. All Rights Reserved.
*
* This software is the confidential and proprietary information of Sun
* Microsystems, Inc. ("Confidential Information"). You shall not
* disclose such Confidential Information and shall use it only in
* accordance with the terms of the license agreement you entered into
* with Sun.
*
* SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
* SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
* IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
* PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES
* SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING
* THIS SOFTWARE OR ITS DERIVATIVES.
*
* CopyrightVersion 1.1_beta
*
*/
package java.io;
/**
* Abstract class for reading filtered character streams.
*
* @version 1.5, 97/01/27
* @author Mark Reinhold
* @since JDK1.1
*/
public abstract class FilterReader extends Reader {
/**
* The underlying character-input stream, or null if the stream has been
* closed
*/
protected Reader in;
/**
* Create a new filtered reader.
*/
protected FilterReader(Reader in) {
super(in);
this.in = in;
}
/**
* Read a single character.
*
* @exception IOException If an I/O error occurs
*/
public int read() throws IOException {
return in.read();
}
/**
* Read 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);
}
/**
* Skip characters.
*
* @exception IOException If an I/O error occurs
*/
public long skip(long n) throws IOException {
return in.skip(n);
}
/**
* Tell whether this stream is ready to be read.
*
* @exception IOException If an I/O error occurs
*/
public boolean ready() throws IOException {
return in.ready();
}
/**
* Tell whether this stream supports the mark() operation.
*/
public boolean markSupported() {
return in.markSupported();
}
/**
* Mark the present position in the stream.
*
* @exception IOException If an I/O error occurs
*/
public void mark(int readAheadLimit) throws IOException {
in.mark(readAheadLimit);
}
/**
* Reset the stream.
*
* @exception IOException If an I/O error occurs
*/
public void reset() throws IOException {
in.reset();
}
/**
* Close the stream.
*
* @exception IOException If an I/O error occurs
*/
public void close() throws IOException {
in.close();
}
}