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

All Implemented Interfaces:

Closeable, AutoCloseable

Direct Known Subclasses:

GZIPInputStream, ZipInputStream
```
public class InflaterInputStream
extends FilterInputStream
```
This class implements a stream filter for uncompressing data in the "deflate" compression format. It is also used as the basis for other decompression filters, such as GZIPInputStream.

See Also:
Inflater

Field Summary

Fields
Modifier and Type	Field and Description
`protected byte[]`	`buf` Input buffer for decompression.
`protected Inflater`	`inf` Decompressor for this stream.
`protected int`	`len` Length of input buffer.

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Fields inherited from class java.io.FilterInputStream in

Constructor Summary

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

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Method Summary

Methods
Modifier and Type	Method and Description
`int`	`available()` Returns 0 after EOF has been reached, otherwise always return 1.
`void`	`close()` Closes this input stream and releases any system resources associated with the stream.
`protected void`	`fill()` Fills input buffer with more data to decompress.
`void`	`mark(int readlimit)` Marks the current position in this input stream.
`boolean`	`markSupported()` Tests if this input stream supports the `mark` and `reset` methods.
`int`	`read()` Reads a byte of uncompressed data.
`int`	`read(byte[] b, int off, int len)` Reads uncompressed data into an array of bytes.
`void`	`reset()` Repositions this stream to the position at the time the `mark` method was last called on this input stream.
`long`	`skip(long n)` Skips specified number of bytes of uncompressed data.

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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
  - inf
    protected Inflater inf
    
    Decompressor for this stream.
  - buf
    protected byte[] buf
    
    Input buffer for decompression.
  - len
    protected int len
    
    Length of input buffer.
- Constructor Detail
  - InflaterInputStream
    public InflaterInputStream(InputStream in, Inflater inf, int size)
    
    Creates a new input stream with the specified decompressor and buffer size.
    
    Parameters:
    in - the input stream
    inf - the decompressor ("inflater")
    size - the input buffer size
    
    Throws:
    
    IllegalArgumentException - if size is <= 0
  - InflaterInputStream
    public InflaterInputStream(InputStream in, Inflater inf)
    
    Creates a new input stream with the specified decompressor and a default buffer size.
    
    Parameters:
    in - the input stream
    inf - the decompressor ("inflater")
  - InflaterInputStream
    public InflaterInputStream(InputStream in)
    
    Creates a new input stream with a default decompressor and buffer size.
    
    Parameters:
    in - the input stream
- Method Detail
  - read
    public int read() throws IOException
    
    Reads a byte of uncompressed data. This method will block until enough input is available for decompression.
    
    Overrides:
    
    read in class FilterInputStream
    
    Returns:
    the byte read, or -1 if end of compressed input is reached
    
    Throws:
    
    IOException - if an I/O error has occurred
    See Also:
    FilterInputStream.in
  - read
    public int read(byte[] b, 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 FilterInputStream
    
    Parameters:
    b - 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 is reached or a preset dictionary is needed
    
    Throws:
    
    NullPointerException - If b is null.
    
    IndexOutOfBoundsException - If off is negative, len is negative, or len is greater than b.length - off
    
    ZipException - if a ZIP format error has occurred
    
    IOException - if an I/O error has occurred
    See Also:
    FilterInputStream.in
  - available
    public int available() throws IOException
    
    Returns 0 after EOF has been reached, otherwise always return 1.
    Programs should not count on this method to return the actual number of bytes that could be read without blocking.
    
    Overrides:
    
    available in class FilterInputStream
    
    Returns:
    1 before EOF and 0 after EOF.
    
    Throws:
    
    IOException - if an I/O error occurs.
  - skip
    public long skip(long n) throws IOException
    
    Skips specified number of bytes of uncompressed data.
    
    Overrides:
    
    skip in class FilterInputStream
    
    Parameters:
    n - the number of bytes to skip
    
    Returns:
    the actual number of bytes skipped.
    
    Throws:
    
    IOException - if an I/O error has occurred
    
    IllegalArgumentException - if n < 0
  - 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 FilterInputStream
    
    Throws:
    
    IOException - if an I/O error has occurred
    See Also:
    FilterInputStream.in
  - fill
    protected void fill() throws IOException
    
    Fills input buffer with more data to decompress.
    
    Throws:
    
    IOException - if an I/O error has occurred
  - markSupported
    public boolean markSupported()
    
    Tests if this input stream supports the mark and reset methods. The markSupported method of InflaterInputStream returns false.
    
    Overrides:
    
    markSupported in class FilterInputStream
    
    Returns:
    a boolean indicating if this stream type supports the mark and reset methods.
    See Also:
    InputStream.mark(int), InputStream.reset()
  - mark
    public void mark(int readlimit)
    
    Marks the current position in this input stream.
    The mark method of InflaterInputStream does nothing.
    
    Overrides:
    
    mark in class FilterInputStream
    
    Parameters:
    readlimit - the maximum limit of bytes that can be read before the mark position becomes invalid.
    See Also:
    InputStream.reset()
  - reset
    public void reset() throws IOException
    
    Repositions this stream to the position at the time the mark method was last called on this input stream.
    The method reset for class InflaterInputStream does nothing except throw an IOException.
    
    Overrides:
    
    reset in class FilterInputStream
    
    Throws:
    
    IOException - if this method is invoked.
    See Also:
    InputStream.mark(int), IOException

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Dokument erstellt 11/06/2005, zuletzt geändert 04/03/2020
Quelle des gedruckten Dokuments:https://www.gaudry.be/de/java-api-rf-java/util/zip/inflaterinputstream.html

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Referenzen

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Class InflaterInputStream

Referenzen