ZipInputStream (Java SE 13 & JDK 13 )

All Implemented Interfaces:: Closeable, AutoCloseable

Direct Known Subclasses:: JarInputStream

public class ZipInputStream
extends InflaterInputStream

This class implements an input stream filter for reading files in the ZIP file format. Includes support for both compressed and uncompressed entries.

Since:: 1.1

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`CENATT`
`static int`	`CENATX`
`static int`	`CENCOM`
`static int`	`CENCRC`
`static int`	`CENDSK`
`static int`	`CENEXT`
`static int`	`CENFLG`
`static int`	`CENHDR`
`static int`	`CENHOW`
`static int`	`CENLEN`
`static int`	`CENNAM`
`static int`	`CENOFF`
`static long`	`CENSIG`
`static int`	`CENSIZ`
`static int`	`CENTIM`
`static int`	`CENVEM`
`static int`	`CENVER`
`static int`	`ENDCOM`
`static int`	`ENDHDR`
`static int`	`ENDOFF`
`static long`	`ENDSIG`
`static int`	`ENDSIZ`
`static int`	`ENDSUB`
`static int`	`ENDTOT`
`static int`	`EXTCRC`
`static int`	`EXTHDR`
`static int`	`EXTLEN`
`static long`	`EXTSIG`
`static int`	`EXTSIZ`
`static int`	`LOCCRC`
`static int`	`LOCEXT`
`static int`	`LOCFLG`
`static int`	`LOCHDR`
`static int`	`LOCHOW`
`static int`	`LOCLEN`
`static int`	`LOCNAM`
`static long`	`LOCSIG`
`static int`	`LOCSIZ`
`static int`	`LOCTIM`
`static int`	`LOCVER`

Constructor Summary

Method Summary

Modifier and Type	Method	Description
`int`	`available()`	Returns 0 after EOF has reached for the current entry data, otherwise always return 1.
`void`	`close()`	Closes this input stream and releases any system resources associated with the stream.
`void`	`closeEntry()`	Closes the current ZIP entry and positions the stream for reading the next entry.
`protected ZipEntry`	`createZipEntry(String name)`	Creates a new `ZipEntry` object for the specified entry name.
`ZipEntry`	`getNextEntry()`	Reads the next ZIP file entry and positions the stream at the beginning of the entry data.
`int`	`read(byte[] b, int off, int len)`	Reads from the current ZIP entry into an array of bytes.
`long`	`skip(long n)`	Skips specified number of bytes in the current ZIP entry.

Methods declared in class java.lang.Object

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

Field Details
- LOCSIG
  
  public static final long LOCSIG
  
  See Also:
  
  Constant Field Values
- EXTSIG
  
  public static final long EXTSIG
  
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  Constant Field Values
- CENSIG
  
  public static final long CENSIG
  
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  Constant Field Values
- ENDSIG
  
  public static final long ENDSIG
  
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  Constant Field Values
- LOCHDR
  
  public static final int LOCHDR
  
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  Constant Field Values
- EXTHDR
  
  public static final int EXTHDR
  
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  Constant Field Values
- CENHDR
  
  public static final int CENHDR
  
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  Constant Field Values
- ENDHDR
  
  public static final int ENDHDR
  
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  Constant Field Values
- LOCVER
  
  public static final int LOCVER
  
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  Constant Field Values
- LOCFLG
  
  public static final int LOCFLG
  
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  Constant Field Values
- LOCHOW
  
  public static final int LOCHOW
  
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  Constant Field Values
- LOCTIM
  
  public static final int LOCTIM
  
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  Constant Field Values
- LOCCRC
  
  public static final int LOCCRC
  
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  Constant Field Values
- LOCSIZ
  
  public static final int LOCSIZ
  
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  Constant Field Values
- LOCLEN
  
  public static final int LOCLEN
  
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  Constant Field Values
- LOCNAM
  
  public static final int LOCNAM
  
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  Constant Field Values
- LOCEXT
  
  public static final int LOCEXT
  
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  Constant Field Values
- EXTCRC
  
  public static final int EXTCRC
  
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  Constant Field Values
- EXTSIZ
  
  public static final int EXTSIZ
  
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  Constant Field Values
- EXTLEN
  
  public static final int EXTLEN
  
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  Constant Field Values
- CENVEM
  
  public static final int CENVEM
  
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  Constant Field Values
- CENVER
  
  public static final int CENVER
  
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  Constant Field Values
- CENFLG
  
  public static final int CENFLG
  
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  Constant Field Values
- CENHOW
  
  public static final int CENHOW
  
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  Constant Field Values
- CENTIM
  
  public static final int CENTIM
  
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  Constant Field Values
- CENCRC
  
  public static final int CENCRC
  
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  Constant Field Values
- CENSIZ
  
  public static final int CENSIZ
  
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  Constant Field Values
- CENLEN
  
  public static final int CENLEN
  
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  Constant Field Values
- CENNAM
  
  public static final int CENNAM
  
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  Constant Field Values
- CENEXT
  
  public static final int CENEXT
  
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  Constant Field Values
- CENCOM
  
  public static final int CENCOM
  
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  Constant Field Values
- CENDSK
  
  public static final int CENDSK
  
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  Constant Field Values
- CENATT
  
  public static final int CENATT
  
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  Constant Field Values
- CENATX
  
  public static final int CENATX
  
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  Constant Field Values
- CENOFF
  
  public static final int CENOFF
  
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  Constant Field Values
- ENDSUB
  
  public static final int ENDSUB
  
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  Constant Field Values
- ENDTOT
  
  public static final int ENDTOT
  
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  Constant Field Values
- ENDSIZ
  
  public static final int ENDSIZ
  
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  Constant Field Values
- ENDOFF
  
  public static final int ENDOFF
  
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  Constant Field Values
- ENDCOM
  
  public static final int ENDCOM
  
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  Constant Field Values
Constructor Details
- ZipInputStream
  
  Creates a new ZIP input stream.
  The UTF-8 charset is used to decode the entry names.
  
  Parameters:
  
  in - the actual input stream
- ZipInputStream
  
  Creates a new ZIP input stream.
  
  Parameters:
  
  in - the actual input stream
  
  charset - The charset to be used to decode the ZIP entry name (ignored if the language encoding bit of the ZIP entry's general purpose bit flag is set).
  
  Since:
  
  1.7
Method Details
- getNextEntry
  
  Reads the next ZIP file entry and positions the stream at the beginning of the entry data.
  
  Returns:
  
  the next ZIP file entry, or null if there are no more entries
  
  Throws:
  
  ZipException - if a ZIP file error has occurred
  
  IOException - if an I/O error has occurred
- closeEntry
  
  Closes the current ZIP entry and positions the stream for reading the next entry.
  
  Throws:
  
  ZipException - if a ZIP file error has occurred
  
  IOException - if an I/O error has occurred
- available
  
  Returns 0 after EOF has reached for the current entry data, 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 InflaterInputStream
  
  Returns:
  
  1 before EOF and 0 after EOF has reached for current entry.
  
  Throws:
  
  IOException - if an I/O error occurs.
- read
  
  public int read(byte[] b, int off, int len) throws IOException
  
  Reads from the current ZIP entry into an array of bytes. If len is not zero, the method blocks until some input is available; otherwise, no bytes are read and 0 is returned.
  
  Overrides:
  
  read in class InflaterInputStream
  
  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 entry is reached
  
  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 file error has occurred
  
  IOException - if an I/O error has occurred
  
  See Also:
  
  FilterInputStream.in
- skip
  
  Skips specified number of bytes in the current ZIP entry.
  
  Overrides:
  
  skip in class InflaterInputStream
  
  Parameters:
  
  n - the number of bytes to skip
  
  Returns:
  
  the actual number of bytes skipped
  
  Throws:
  
  ZipException - if a ZIP file error has occurred
  
  IOException - if an I/O error has occurred
  
  IllegalArgumentException - if n < 0
  
  See Also:
  
  InputStream.skipNBytes(long)
- close
  
  Closes this input stream and releases any system resources associated with the stream.
  
  Specified by:
  
  close in interface AutoCloseable
  
  Specified by:
  
  close in interface Closeable
  
  Overrides:
  
  close in class InflaterInputStream
  
  Throws:
  
  IOException - if an I/O error has occurred
  
  See Also:
  
  FilterInputStream.in
- createZipEntry
  
  Creates a new ZipEntry object for the specified entry name.
  
  Parameters:
  
  name - the ZIP file entry name
  
  Returns:
  
  the ZipEntry just created

Field Summary

Constructor Summary

Method Summary

Methods declared in class java.lang.Object

Field Details

Constructor Details

Method Details