1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 package org.apache.commons.io.output; 18 19 import java.io.IOException; 20 import java.io.FilterWriter; 21 import java.io.Writer; 22 23 /** 24 * A Proxy stream which acts as expected, that is it passes the method 25 * calls on to the proxied stream and doesn't change which methods are 26 * being called. It is an alternative base class to FilterWriter 27 * to increase reusability, because FilterWriter changes the 28 * methods being called, such as write(char[]) to write(char[], int, int) 29 * and write(String) to write(String, int, int). 30 * 31 * @author Stephen Colebourne 32 * @version $Id: ProxyWriter.java 471628 2006-11-06 04:06:45Z bayard $ 33 */ 34 public class ProxyWriter extends FilterWriter { 35 36 /** 37 * Constructs a new ProxyWriter. 38 * 39 * @param proxy the Writer to delegate to 40 */ 41 public ProxyWriter(Writer proxy) { 42 super(proxy); 43 // the proxy is stored in a protected superclass variable named 'out' 44 } 45 46 /** @see java.io.Writer#write(int) */ 47 public void write(int idx) throws IOException { 48 out.write(idx); 49 } 50 51 /** @see java.io.Writer#write(char[]) */ 52 public void write(char[] chr) throws IOException { 53 out.write(chr); 54 } 55 56 /** @see java.io.Writer#write(char[], int, int) */ 57 public void write(char[] chr, int st, int end) throws IOException { 58 out.write(chr, st, end); 59 } 60 61 /** @see java.io.Writer#write(String) */ 62 public void write(String str) throws IOException { 63 out.write(str); 64 } 65 66 /** @see java.io.Writer#write(String, int, int) */ 67 public void write(String str, int st, int end) throws IOException { 68 out.write(str, st, end); 69 } 70 71 /** @see java.io.Writer#flush() */ 72 public void flush() throws IOException { 73 out.flush(); 74 } 75 76 /** @see java.io.Writer#close() */ 77 public void close() throws IOException { 78 out.close(); 79 } 80 81 }