java.lang.Object
- java.io.InputStream
- - java.io.FilterInputStream
  - - java.util.zip.InflaterInputStream
    - - java.util.zip.GZIPInputStream

All Implemented Interfaces:

Closeable, AutoCloseable
```
public class GZIPInputStream
extends InflaterInputStream
```
This class implements a stream filter for reading compressed data in the GZIP file format.

See Also:
InflaterInputStream

Field Summary

Fields
Modifier and Type	Field and Description
`protected CRC32`	`crc` CRC-32 for uncompressed data.
`protected boolean`	`eos` Indicates end of input stream.
`static int`	`GZIP_MAGIC` GZIP header magic number.

GZIPInputStream (Java Platform SE 7 ) Home of API Java Contents Haut

Fields inherited from class java.util.zip.InflaterInputStream buf, inf, len

Fields inherited from class java.io.FilterInputStream in

Constructor Summary

Constructors
Constructor and Description
`GZIPInputStream(InputStream in)` Creates a new input stream with a default buffer size.
`GZIPInputStream(InputStream in, int size)` Creates a new input stream with the specified buffer size.

GZIPInputStream (Java Platform SE 7 ) Home of API Java Contents Haut

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`close()` Closes this input stream and releases any system resources associated with the stream.
`int`	`read(byte[] buf, int off, int len)` Reads uncompressed data into an array of bytes.

GZIPInputStream (Java Platform SE 7 ) Home of API Java Contents Haut

Methods inherited from class java.util.zip.InflaterInputStream available, fill, mark, markSupported, read, reset, skip

Methods inherited from class java.io.FilterInputStream read

Methods inherited from class java.lang.Object clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - crc
    protected CRC32 crc
    
    CRC-32 for uncompressed data.
  - eos
    protected boolean eos
    
    Indicates end of input stream.
  - GZIP_MAGIC
    public static final int GZIP_MAGIC
    
    GZIP header magic number.
    
    See Also:
    Constant Field Values
- Constructor Detail
  - GZIPInputStream
    public GZIPInputStream(InputStream in, int size) throws IOException
    
    Creates a new input stream with the specified buffer size.
    
    Parameters:
    in - the input stream
    size - the input buffer size
    
    Throws:
    
    ZipException - if a GZIP format error has occurred or the compression method used is unsupported
    
    IOException - if an I/O error has occurred
    
    IllegalArgumentException - if size is <= 0
  - GZIPInputStream
    public GZIPInputStream(InputStream in) throws IOException
    
    Creates a new input stream with a default buffer size.
    
    Parameters:
    in - the input stream
    
    Throws:
    
    ZipException - if a GZIP format error has occurred or the compression method used is unsupported
    
    IOException - if an I/O error has occurred
- Method Detail
  - read
    public int read(byte[] buf, int off, int len) throws IOException
    
    Reads uncompressed data into an array of bytes. If len is not zero, the method will block until some input can be decompressed; otherwise, no bytes are read and 0 is returned.
    
    Overrides:
    
    read in class InflaterInputStream
    
    Parameters:
    buf - the buffer into which the data is read
    off - the start offset in the destination array b
    len - the maximum number of bytes read
    
    Returns:
    the actual number of bytes read, or -1 if the end of the compressed input stream is reached
    
    Throws:
    
    NullPointerException - If buf is null.
    
    IndexOutOfBoundsException - If off is negative, len is negative, or len is greater than buf.length - off
    
    ZipException - if the compressed input data is corrupt.
    
    IOException - if an I/O error has occurred.
    See Also:
    FilterInputStream.in
  - close
    public void close() throws IOException
    
    Closes this input stream and releases any system resources associated with the stream.
    
    Specified by:
    
    close in interface Closeable
    
    Specified by:
    
    close in interface AutoCloseable
    
    Overrides:
    
    close in class InflaterInputStream
    
    Throws:
    
    IOException - if an I/O error has occurred
    See Also:
    FilterInputStream.in

Document created the 11/06/2005, last modified the 04/03/2020
Source of the printed document:https://www.gaudry.be/en/java-api-rf-java/util/zip/GZIPInputStream.html

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References

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Contents Haut

Class GZIPInputStream

References