151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski/* 269dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak * Copyright (c) 1994, 2013, Oracle and/or its affiliates. All rights reserved. 351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * This code is free software; you can redistribute it and/or modify it 651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * under the terms of the GNU General Public License version 2 only, as 751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * published by the Free Software Foundation. Oracle designates this 851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * particular file as subject to the "Classpath" exception as provided 951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * by Oracle in the LICENSE file that accompanied this code. 1051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 1151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * This code is distributed in the hope that it will be useful, but WITHOUT 1251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * version 2 for more details (a copy is included in the LICENSE file that 1551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * accompanied this code). 1651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 1751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * You should have received a copy of the GNU General Public License version 1851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 2 along with this work; if not, write to the Free Software Foundation, 1951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 2051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 2151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * or visit www.oracle.com if you need additional information or have any 2351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * questions. 2451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 2551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 2651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskipackage java.io; 2751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 2851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskiimport java.util.Arrays; 2951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 3051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski/** 3151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * This class implements an output stream in which the data is 3251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * written into a byte array. The buffer automatically grows as data 3351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * is written to it. 3451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * The data can be retrieved using <code>toByteArray()</code> and 3551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * <code>toString()</code>. 3651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * <p> 3751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Closing a <tt>ByteArrayOutputStream</tt> has no effect. The methods in 3851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * this class can be called after the stream has been closed without 3951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * generating an <tt>IOException</tt>. 4051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 4151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @author Arthur van Hoff 4251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @since JDK1.0 4351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 4451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 4551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebskipublic class ByteArrayOutputStream extends OutputStream { 4651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 4751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 4851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * The buffer where data is stored. 4951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 5051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski protected byte buf[]; 5151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 5251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 5351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * The number of valid bytes in the buffer. 5451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 5551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski protected int count; 5651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 5751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 5851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Creates a new byte array output stream. The buffer capacity is 5951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * initially 32 bytes, though its size increases if necessary. 6051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 6151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public ByteArrayOutputStream() { 6251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski this(32); 6351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 6451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 6551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 6651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Creates a new byte array output stream, with a buffer capacity of 6751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * the specified size, in bytes. 6851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 6951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @param size the initial size. 7051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @exception IllegalArgumentException if size is negative. 7151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 7251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public ByteArrayOutputStream(int size) { 7351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (size < 0) { 7451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski throw new IllegalArgumentException("Negative initial size: " 7551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski + size); 7651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 7751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski buf = new byte[size]; 7851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 7951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 8051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 8151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Increases the capacity if necessary to ensure that it can hold 8251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * at least the number of elements specified by the minimum 8351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * capacity argument. 8451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 8551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @param minCapacity the desired minimum capacity 8651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @throws OutOfMemoryError if {@code minCapacity < 0}. This is 8751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * interpreted as a request for the unsatisfiably large capacity 8851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * {@code (long) Integer.MAX_VALUE + (minCapacity - Integer.MAX_VALUE)}. 8951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 9051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski private void ensureCapacity(int minCapacity) { 9151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski // overflow-conscious code 9251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (minCapacity - buf.length > 0) 9351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski grow(minCapacity); 9451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 9551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 9651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 9769dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak * The maximum size of array to allocate. 9869dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak * Some VMs reserve some header words in an array. 9969dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak * Attempts to allocate larger arrays may result in 10069dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak * OutOfMemoryError: Requested array size exceeds VM limit 10169dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak */ 10269dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak private static final int MAX_ARRAY_SIZE = Integer.MAX_VALUE - 8; 10369dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak 10469dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak /** 10551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Increases the capacity to ensure that it can hold at least the 10651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * number of elements specified by the minimum capacity argument. 10751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 10851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @param minCapacity the desired minimum capacity 10951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 11051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski private void grow(int minCapacity) { 11151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski // overflow-conscious code 11251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski int oldCapacity = buf.length; 11351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski int newCapacity = oldCapacity << 1; 11451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if (newCapacity - minCapacity < 0) 11551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski newCapacity = minCapacity; 11669dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak if (newCapacity - MAX_ARRAY_SIZE > 0) 11769dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak newCapacity = hugeCapacity(minCapacity); 11851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski buf = Arrays.copyOf(buf, newCapacity); 11951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 12051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 12169dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak private static int hugeCapacity(int minCapacity) { 12269dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak if (minCapacity < 0) // overflow 12369dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak throw new OutOfMemoryError(); 12469dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak return (minCapacity > MAX_ARRAY_SIZE) ? 12569dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak Integer.MAX_VALUE : 12669dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak MAX_ARRAY_SIZE; 12769dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak } 12869dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak 12951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 13051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Writes the specified byte to this byte array output stream. 13151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 13251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @param b the byte to be written. 13351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 13451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public synchronized void write(int b) { 13551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski ensureCapacity(count + 1); 13651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski buf[count] = (byte) b; 13751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski count += 1; 13851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 13951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 14051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 14151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Writes <code>len</code> bytes from the specified byte array 14251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * starting at offset <code>off</code> to this byte array output stream. 14351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 14451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @param b the data. 14551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @param off the start offset in the data. 14651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @param len the number of bytes to write. 14751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 14851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public synchronized void write(byte b[], int off, int len) { 14951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski if ((off < 0) || (off > b.length) || (len < 0) || 15051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski ((off + len) - b.length > 0)) { 15151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski throw new IndexOutOfBoundsException(); 15251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 15351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski ensureCapacity(count + len); 15451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski System.arraycopy(b, off, buf, count, len); 15551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski count += len; 15651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 15751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 15851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 15951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Writes the complete contents of this byte array output stream to 16051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * the specified output stream argument, as if by calling the output 16151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * stream's write method using <code>out.write(buf, 0, count)</code>. 16251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 16351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @param out the output stream to which to write the data. 16451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @exception IOException if an I/O error occurs. 16551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 16651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public synchronized void writeTo(OutputStream out) throws IOException { 16751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski out.write(buf, 0, count); 16851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 16951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 17051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 17151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Resets the <code>count</code> field of this byte array output 17251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * stream to zero, so that all currently accumulated output in the 17351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * output stream is discarded. The output stream can be used again, 17451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * reusing the already allocated buffer space. 17551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 17651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @see java.io.ByteArrayInputStream#count 17751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 17851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public synchronized void reset() { 17951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski count = 0; 18051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 18151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 18251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 18351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Creates a newly allocated byte array. Its size is the current 18451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * size of this output stream and the valid contents of the buffer 18551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * have been copied into it. 18651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 18751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @return the current contents of this output stream, as a byte array. 18851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @see java.io.ByteArrayOutputStream#size() 18951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 19051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public synchronized byte toByteArray()[] { 19151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return Arrays.copyOf(buf, count); 19251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 19351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 19451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 19551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Returns the current size of the buffer. 19651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 19751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @return the value of the <code>count</code> field, which is the number 19851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * of valid bytes in this output stream. 19951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @see java.io.ByteArrayOutputStream#count 20051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 20151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public synchronized int size() { 20251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return count; 20351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 20451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 20551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 20651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Converts the buffer's contents into a string decoding bytes using the 20751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * platform's default character set. The length of the new <tt>String</tt> 20851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * is a function of the character set, and hence may not be equal to the 20951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * size of the buffer. 21051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 21151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * <p> This method always replaces malformed-input and unmappable-character 21251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * sequences with the default replacement string for the platform's 21351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * default character set. The {@linkplain java.nio.charset.CharsetDecoder} 21451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * class should be used when more control over the decoding process is 21551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * required. 21651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 21751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @return String decoded from the buffer's contents. 21851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @since JDK1.1 21951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 22051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public synchronized String toString() { 22151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return new String(buf, 0, count); 22251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 22351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 22451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 22551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Converts the buffer's contents into a string by decoding the bytes using 22669dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak * the named {@link java.nio.charset.Charset charset}. The length of the new 22769dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak * <tt>String</tt> is a function of the charset, and hence may not be equal 22869dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak * to the length of the byte array. 22951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 23051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * <p> This method always replaces malformed-input and unmappable-character 23151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * sequences with this charset's default replacement string. The {@link 23251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * java.nio.charset.CharsetDecoder} class should be used when more control 23351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * over the decoding process is required. 23451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 23569dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak * @param charsetName the name of a supported 23669dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak * {@link java.nio.charset.Charset charset} 23769dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak * @return String decoded from the buffer's contents. 23851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @exception UnsupportedEncodingException 23951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * If the named charset is not supported 24069dae7ca4d593ff2ada99cf69696e782bcd46757Przemyslaw Szczepaniak * @since JDK1.1 24151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 24251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public synchronized String toString(String charsetName) 24351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski throws UnsupportedEncodingException 24451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski { 24551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return new String(buf, 0, count, charsetName); 24651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 24751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 24851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 24951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Creates a newly allocated string. Its size is the current size of 25051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * the output stream and the valid contents of the buffer have been 25151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * copied into it. Each character <i>c</i> in the resulting string is 25251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * constructed from the corresponding element <i>b</i> in the byte 25351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * array such that: 25451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * <blockquote><pre> 25551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * c == (char)(((hibyte & 0xff) << 8) | (b & 0xff)) 25651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * </pre></blockquote> 25751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 25851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @deprecated This method does not properly convert bytes into characters. 25951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * As of JDK 1.1, the preferred way to do this is via the 26051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * <code>toString(String enc)</code> method, which takes an encoding-name 26151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * argument, or the <code>toString()</code> method, which uses the 26251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * platform's default character encoding. 26351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * 26451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @param hibyte the high byte of each resulting Unicode character. 26551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @return the current contents of the output stream, as a string. 26651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @see java.io.ByteArrayOutputStream#size() 26751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @see java.io.ByteArrayOutputStream#toString(String) 26851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * @see java.io.ByteArrayOutputStream#toString() 26951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 27051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski @Deprecated 27151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public synchronized String toString(int hibyte) { 27251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski return new String(buf, hibyte, 0, count); 27351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 27451b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 27551b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski /** 27651b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * Closing a <tt>ByteArrayOutputStream</tt> has no effect. The methods in 27751b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * this class can be called after the stream has been closed without 27851b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski * generating an <tt>IOException</tt>. 27951b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski */ 28051b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski public void close() throws IOException { 28151b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski } 28251b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski 28351b1b6997fd3f980076b8081f7f1165ccc2a4008Piotr Jastrzebski} 284