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Java Source Code / Java Documentation » 6.0 JDK Modules » j2me » java.util.zip 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


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

All known Subclasses:   java.util.zip.GZIPInputStream,  java.util.zip.ZipInputStream,
InflaterInputStream
public class InflaterInputStream extends FilterInputStream (Code)
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. NOTE: java.util.zip.GZIPInputStream is found in J2ME CDC profiles such as J2ME Foundation Profile.
See Also:   Inflater
version:
   1.28, 02/02/00
author:
   David Connelly


Field Summary
protected  byte[]buf
     Input buffer for decompression.
protected  Inflaterinf
     Decompressor for this stream.
protected  intlen
     Length of input buffer.
 booleanusesDefaultInflater
    

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

Method Summary
public  intavailable()
     Returns 0 after EOF has reached, otherwise always return 1.
public  voidclose()
     Closes the input stream.
protected  voidfill()
     Fills input buffer with more data to decompress.
public  intread()
     Reads a byte of uncompressed data.
public  intread(byte[] b, int off, int len)
     Reads uncompressed data into an array of bytes.
public  longskip(long n)
     Skips specified number of bytes of uncompressed data.

Field Detail
buf
protected byte[] buf(Code)
Input buffer for decompression.



inf
protected Inflater inf(Code)
Decompressor for this stream.



len
protected int len(Code)
Length of input buffer.



usesDefaultInflater
boolean usesDefaultInflater(Code)




Constructor Detail
InflaterInputStream
public InflaterInputStream(InputStream in, Inflater inf, int size)(Code)
Creates a new input stream with the specified decompressor and buffer size.
Parameters:
  in - the input stream
Parameters:
  inf - the decompressor ("inflater")
Parameters:
  size - the input buffer size
exception:
  IllegalArgumentException - if size is <= 0



InflaterInputStream
public InflaterInputStream(InputStream in, Inflater inf)(Code)
Creates a new input stream with the specified decompressor and a default buffer size.
Parameters:
  in - the input stream
Parameters:
  inf - the decompressor ("inflater")



InflaterInputStream
public InflaterInputStream(InputStream in)(Code)
Creates a new input stream with a default decompressor and buffer size.
Parameters:
  in - the input stream




Method Detail
available
public int available() throws IOException(Code)
Returns 0 after EOF has 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. 1 before EOF and 0 after EOF.
exception:
  IOException - if an I/O error occurs.




close
public void close() throws IOException(Code)
Closes the input stream.
exception:
  IOException - if an I/O error has occurred



fill
protected void fill() throws IOException(Code)
Fills input buffer with more data to decompress.
exception:
  IOException - if an I/O error has occurred



read
public int read() throws IOException(Code)
Reads a byte of uncompressed data. This method will block until enough input is available for decompression. the byte read, or -1 if end of compressed input is reached
exception:
  IOException - if an I/O error has occurred



read
public int read(byte[] b, int off, int len) throws IOException(Code)
Reads uncompressed data into an array of bytes. This method will block until some input can be decompressed.
Parameters:
  b - the buffer into which the data is read
Parameters:
  off - the start offset of the data
Parameters:
  len - the maximum number of bytes read the actual number of bytes read, or -1 if the end of thecompressed input is reached or a preset dictionary is needed
exception:
  ZipException - if a ZIP format error has occurred
exception:
  IOException - if an I/O error has occurred



skip
public long skip(long n) throws IOException(Code)
Skips specified number of bytes of uncompressed data.
Parameters:
  n - the number of bytes to skip the actual number of bytes skipped.
exception:
  IOException - if an I/O error has occurred
exception:
  IllegalArgumentException - if n < 0



Fields inherited from java.io.FilterInputStream
protected InputStream in(Code)(Java Doc)

Methods inherited from java.io.FilterInputStream
public int available() throws IOException(Code)(Java Doc)
public void close() throws IOException(Code)(Java Doc)
public synchronized void mark(int readlimit)(Code)(Java Doc)
public boolean markSupported()(Code)(Java Doc)
public int read() throws IOException(Code)(Java Doc)
public int read(byte b) throws IOException(Code)(Java Doc)
public int read(byte b, int off, int len) throws IOException(Code)(Java Doc)
public synchronized void reset() throws IOException(Code)(Java Doc)
public long skip(long n) throws IOException(Code)(Java Doc)

Methods inherited from java.io.InputStream
public int available() throws IOException(Code)(Java Doc)
public void close() throws IOException(Code)(Java Doc)
public synchronized void mark(int readlimit)(Code)(Java Doc)
public boolean markSupported()(Code)(Java Doc)
abstract public int read() throws IOException(Code)(Java Doc)
public int read(byte b) throws IOException(Code)(Java Doc)
public int read(byte b, int off, int len) throws IOException(Code)(Java Doc)
public synchronized void reset() throws IOException(Code)(Java Doc)
public long skip(long n) throws IOException(Code)(Java Doc)

Methods inherited from java.lang.Object
public boolean equals(Object obj)(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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