Class: java.io.ByteArrayOutputStream
- public class ByteArrayOutputStream
- extends OutputStream
This class implements an output stream in which the data is
written into a byte array. The buffer automatically grows as data
is written to it.
The data can be retrieved using
toByteArray() and
toString().
Closing a ByteArrayOutputStream has no effect. The methods in this class can be called after the stream has been closed without generating an IOException.
Inheritance
Superclass tree:- java.lang.Object
- java.io.OutputStream
- java.io.ByteArrayOutputStream
Methods
-
ByteArrayOutputStreamtop
public ByteArrayOutputStream()Creates a new byte array output stream. The buffer capacity is initially 32 bytes, though its size increases if necessary. -
ByteArrayOutputStreamtop
public ByteArrayOutputStream(int size)Creates a new byte array output stream, with a buffer capacity of the specified size, in bytes. -
closetop
public void close() throws IOExceptionClosing a ByteArrayOutputStream has no effect. The methods in this class can be called after the stream has been closed without generating an IOException.- Override hierarchy:
- close from OutputStream
-
resettop
public synchronized void reset()Resets thecountfield of this byte array output stream to zero, so that all currently accumulated output in the output stream is discarded. The output stream can be used again, reusing the already allocated buffer space. -
sizetop
public synchronized int size()Returns the current size of the buffer. -
toByteArraytop
public synchronized byte[] toByteArray()Creates a newly allocated byte array. Its size is the current size of this output stream and the valid contents of the buffer have been copied into it. -
toStringtop
public synchronized String toString()Converts the buffer's contents into a string decoding bytes using the platform's default character set. The length of the new String is a function of the character set, and hence may not be equal to the size of the buffer.This method always replaces malformed-input and unmappable-character sequences with the default replacement string for the platform's default character set. The java.nio.charset.CharsetDecoder class should be used when more control over the decoding process is required.
-
toStringtop
public synchronized String toString(int hibyte)Creates a newly allocated string. Its size is the current size of the output stream and the valid contents of the buffer have been copied into it. Each character c in the resulting string is constructed from the corresponding element b in the byte array such that:c == (char)(((hibyte & 0xff) << 8) | (b & 0xff)) -
toStringtop
Converts the buffer's contents into a string by decoding the bytes using the specified charsetName. The length of the new String is a function of the charset, and hence may not be equal to the length of the byte array.This method always replaces malformed-input and unmappable-character sequences with this charset's default replacement string. The java.nio.charset.CharsetDecoder class should be used when more control over the decoding process is required.
-
writetop
public synchronized void write(int b)Writes the specified byte to this byte array output stream.- Override hierarchy:
- write from OutputStream
-
writetop
public synchronized void write(byte[] b, int off, int len)Writeslenbytes from the specified byte array starting at offsetoffto this byte array output stream.- Override hierarchy:
- write from OutputStream
-
writeTotop
public synchronized void writeTo(OutputStream out) throws IOExceptionWrites the complete contents of this byte array output stream to the specified output stream argument, as if by calling the output stream's write method usingout.write(buf, 0, count).