ByteArrayOutputStream

buf

 protected byte[] buf

The buffer where data is stored.

count

 protected int count

The number of valid bytes in the buffer.

ByteArrayOutputStream

 public ByteArrayOutputStream ()

Creates a new ByteArrayOutputStream. The buffer capacity is initially 32 bytes, though its size increases if necessary.

ByteArrayOutputStream

 public ByteArrayOutputStream (int size)

Creates a new ByteArrayOutputStream, with a buffer capacity of the specified size, in bytes.

close

 public void close ()

Closing a ByteArrayOutputStream has no effect. The methods in this class can be called after the stream has been closed without generating an IOException.

reset

 public void reset ()

Resets the count field of this ByteArrayOutputStream 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.

size

 public int size ()

Returns the current size of the buffer.

toByteArray

 public 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.

toString

 public String toString (String charsetName)

Converts the buffer's contents into a string by decoding the bytes using the named charset.

This method is equivalent to #toString(charset) that takes a charset.

An invocation of this method of the form

 ByteArrayOutputStream b = ... b.toString("UTF-8")  

 ByteArrayOutputStream b = ... b.toString(StandardCharsets.UTF_8)  

toString

 public String toString (Charset charset)

Converts the buffer's contents into a string by decoding the bytes using the specified charset. 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 the charset's default replacement string. The CharsetDecoder class should be used when more control over the decoding process is required.

toString

 public 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 CharsetDecoder class should be used when more control over the decoding process is required.

toString

 public String toString (int hibyte)

This method was deprecated in API level 15.
This method does not properly convert bytes into characters. As of JDK 1.1, the preferred way to do this is via the toString(java.lang.String) or toString(java.nio.charset.Charset) method, which takes an encoding-name or charset argument, or the toString() method, which uses the platform's default character encoding.

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)) 

write

 public void write (byte[] b, int off, int len)

Writes len bytes from the specified byte array starting at offset off to this ByteArrayOutputStream.

write

 public void write (int b)

Writes the specified byte to this ByteArrayOutputStream.

writeBytes

 public void writeBytes (byte[] b)

Writes the complete contents of the specified byte array to this ByteArrayOutputStream.

writeTo

 public void writeTo (OutputStream out)

Writes the complete contents of this ByteArrayOutputStream to the specified output stream argument, as if by calling the output stream's write method using out.write(buf, 0, count).