java.util.zip

Class InflaterOutputStream

java.lang.Object

java.io.OutputStream

java.io.FilterOutputStream

java.util.zip.InflaterOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

public class InflaterOutputStream
extends FilterOutputStream

An OutputStream filter to decompress data. Callers write compressed data in the "deflate" format, and uncompressed data is written to the underlying stream.

Since:

1.6

Field Summary

Fields

Modifier and Type	Field and Description
protected byte[]	buf
protected Inflater	inf

Fields inherited from class java.io.FilterOutputStream

out

Constructor Summary

Constructors

Constructor and Description
InflaterOutputStream(OutputStream out) Constructs an InflaterOutputStream with a new Inflater and an implementation-defined default internal buffer size.
InflaterOutputStream(OutputStream out, Inflater inf) Constructs an InflaterOutputStream with the given Inflater and an implementation-defined default internal buffer size.
InflaterOutputStream(OutputStream out, Inflater inf, int bufferSize) Constructs an InflaterOutputStream with the given Inflater and given internal buffer size.

Method Summary

Modifier and Type	Method and Description
void	close() Writes remaining data into the output stream and closes the underlying output stream.
void	finish() Finishes writing current uncompressed data into the InflaterOutputStream without closing it.
void	flush() Ensures that all pending data is sent out to the target stream.
void	write(byte[] bytes, int offset, int byteCount) Writes to the decompressing output stream.
void	write(int b) Writes a byte to the decompressing output stream.

Methods inherited from class java.io.OutputStream

nullOutputStream, write

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

inf

protected final Inflater inf

buf

protected final byte[] buf

Constructor Detail

InflaterOutputStream

public InflaterOutputStream(OutputStream out)

Constructs an InflaterOutputStream with a new Inflater and an implementation-defined default internal buffer size. out is a destination for uncompressed data, and compressed data will be written to this stream.

Parameters:

out - the destination OutputStream

InflaterOutputStream

public InflaterOutputStream(OutputStream out,
                            Inflater inf)

Constructs an InflaterOutputStream with the given Inflater and an implementation-defined default internal buffer size. out is a destination for uncompressed data, and compressed data will be written to this stream.

Parameters:

out - the destination OutputStream

inf - the Inflater to be used for decompression

InflaterOutputStream

public InflaterOutputStream(OutputStream out,
                            Inflater inf,
                            int bufferSize)

Constructs an InflaterOutputStream with the given Inflater and given internal buffer size. out is a destination for uncompressed data, and compressed data will be written to this stream.

Parameters:

out - the destination OutputStream

inf - the Inflater to be used for decompression

bufferSize - the length in bytes of the internal buffer

Method Detail

close

public void close()
           throws IOException

Writes remaining data into the output stream and closes the underlying output stream.

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class FilterOutputStream

Throws:

IOException - if an error occurs attempting to close this stream.

flush

public void flush()
           throws IOException

Description copied from class: FilterOutputStream

Ensures that all pending data is sent out to the target stream. This implementation flushes the target stream.

Specified by:

flush in interface Flushable

Overrides:

flush in class FilterOutputStream

Throws:

IOException - if an error occurs attempting to flush this stream.

finish

public void finish()
            throws IOException

Finishes writing current uncompressed data into the InflaterOutputStream without closing it.

Throws:

IOException - if an I/O error occurs, or the stream has been closed

write

public void write(int b)
           throws IOException,
                  ZipException

Writes a byte to the decompressing output stream. b should be a byte of compressed input. The corresponding uncompressed data will be written to the underlying stream.

Overrides:

write in class FilterOutputStream

Parameters:

b - the byte

Throws:

IOException - if an I/O error occurs, or the stream has been closed

ZipException - if a zip exception occurs.

write

public void write(byte[] bytes,
                  int offset,
                  int byteCount)
           throws IOException,
                  ZipException

Writes to the decompressing output stream. The bytes array should contain compressed input. The corresponding uncompressed data will be written to the underlying stream.

Overrides:

write in class FilterOutputStream

Parameters:

bytes - the buffer to write.

offset - the index of the first byte in buffer to write.

byteCount - the number of bytes in buffer to write.

Throws:

IOException - if an I/O error occurs, or the stream has been closed

ZipException - if a zip exception occurs.

NullPointerException - if b == null.

IndexOutOfBoundsException - if off < 0 || len < 0 || off + len > b.length