jdk/src/share/classes/java/io/FilterWriter.java
changeset 2 90ce3da70b43
child 5506 202f599c92aa
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/java/io/FilterWriter.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,107 @@
+/*
+ * Copyright 1996-2005 Sun Microsystems, Inc.  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.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package java.io;
+
+
+/**
+ * Abstract class for writing filtered character streams.
+ * The abstract class <code>FilterWriter</code> itself
+ * provides default methods that pass all requests to the
+ * contained stream. Subclasses of <code>FilterWriter</code>
+ * should override some of these methods and may also
+ * provide additional methods and fields.
+ *
+ * @author      Mark Reinhold
+ * @since       JDK1.1
+ */
+
+public abstract class FilterWriter extends Writer {
+
+    /**
+     * The underlying character-output stream.
+     */
+    protected Writer out;
+
+    /**
+     * Create a new filtered writer.
+     *
+     * @param out  a Writer object to provide the underlying stream.
+     * @throws NullPointerException if <code>out</code> is <code>null</code>
+     */
+    protected FilterWriter(Writer out) {
+        super(out);
+        this.out = out;
+    }
+
+    /**
+     * Writes a single character.
+     *
+     * @exception  IOException  If an I/O error occurs
+     */
+    public void write(int c) throws IOException {
+        out.write(c);
+    }
+
+    /**
+     * Writes a portion of an array of characters.
+     *
+     * @param  cbuf  Buffer of characters to be written
+     * @param  off   Offset from which to start reading characters
+     * @param  len   Number of characters to be written
+     *
+     * @exception  IOException  If an I/O error occurs
+     */
+    public void write(char cbuf[], int off, int len) throws IOException {
+        out.write(cbuf, off, len);
+    }
+
+    /**
+     * Writes a portion of a string.
+     *
+     * @param  str  String to be written
+     * @param  off  Offset from which to start reading characters
+     * @param  len  Number of characters to be written
+     *
+     * @exception  IOException  If an I/O error occurs
+     */
+    public void write(String str, int off, int len) throws IOException {
+        out.write(str, off, len);
+    }
+
+    /**
+     * Flushes the stream.
+     *
+     * @exception  IOException  If an I/O error occurs
+     */
+    public void flush() throws IOException {
+        out.flush();
+    }
+
+    public void close() throws IOException {
+        out.close();
+    }
+
+}