Java™ Platform
Standard Ed. 6

java.util.zip
Class ZipEntry

java.lang.Object
  extended by java.util.zip.ZipEntry
All Implemented Interfaces:
Cloneable
Direct Known Subclasses:
JarEntry

public class ZipEntry
extends Object
implements Cloneable

This class is used to represent a ZIP file entry.


Field Summary
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 DEFLATED
          Compression method for compressed (deflated) entries.
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
           
static int STORED
          Compression method for uncompressed entries.
 
Constructor Summary
ZipEntry(String name)
          Creates a new zip entry with the specified name.
ZipEntry(ZipEntry e)
          Creates a new zip entry with fields taken from the specified zip entry.
 
Method Summary
 Object clone()
          Returns a copy of this entry.
 String getComment()
          Returns the comment string for the entry, or null if none.
 long getCompressedSize()
          Returns the size of the compressed entry data, or -1 if not known.
 long getCrc()
          Returns the CRC-32 checksum of the uncompressed entry data, or -1 if not known.
 byte[] getExtra()
          Returns the extra field data for the entry, or null if none.
 int getMethod()
          Returns the compression method of the entry, or -1 if not specified.
 String getName()
          Returns the name of the entry.
 long getSize()
          Returns the uncompressed size of the entry data, or -1 if not known.
 long getTime()
          Returns the modification time of the entry, or -1 if not specified.
 int hashCode()
          Returns the hash code value for this entry.
 boolean isDirectory()
          Returns true if this is a directory entry.
 void setComment(String comment)
          Sets the optional comment string for the entry.
 void setCompressedSize(long csize)
          Sets the size of the compressed entry data.
 void setCrc(long crc)
          Sets the CRC-32 checksum of the uncompressed entry data.
 void setExtra(byte[] extra)
          Sets the optional extra field data for the entry.
 void setMethod(int method)
          Sets the compression method for the entry.
 void setSize(long size)
          Sets the uncompressed size of the entry data.
 void setTime(long time)
          Sets the modification time of the entry.
 String toString()
          Returns a string representation of the ZIP entry.
 
Methods inherited from class java.lang.Object
equals, finalize, getClass, notify, notifyAll, wait, wait, wait
 

Field Detail

STORED

public static final int STORED
Compression method for uncompressed entries.

See Also:
Constant Field Values

DEFLATED

public static final int DEFLATED
Compression method for compressed (deflated) entries.

See Also:
Constant Field Values

LOCSIG

public static final long LOCSIG
See Also:
Constant Field Values

EXTSIG

public static final long EXTSIG
See Also:
Constant Field Values

CENSIG

public static final long CENSIG
See Also:
Constant Field Values

ENDSIG

public static final long ENDSIG
See Also:
Constant Field Values

LOCHDR

public static final int LOCHDR
See Also:
Constant Field Values

EXTHDR

public static final int EXTHDR
See Also:
Constant Field Values

CENHDR

public static final int CENHDR
See Also:
Constant Field Values

ENDHDR

public static final int ENDHDR
See Also:
Constant Field Values

LOCVER

public static final int LOCVER
See Also:
Constant Field Values

LOCFLG

public static final int LOCFLG
See Also:
Constant Field Values

LOCHOW

public static final int LOCHOW
See Also:
Constant Field Values

LOCTIM

public static final int LOCTIM
See Also:
Constant Field Values

LOCCRC

public static final int LOCCRC
See Also:
Constant Field Values

LOCSIZ

public static final int LOCSIZ
See Also:
Constant Field Values

LOCLEN

public static final int LOCLEN
See Also:
Constant Field Values

LOCNAM

public static final int LOCNAM
See Also:
Constant Field Values

LOCEXT

public static final int LOCEXT
See Also:
Constant Field Values

EXTCRC

public static final int EXTCRC
See Also:
Constant Field Values

EXTSIZ

public static final int EXTSIZ
See Also:
Constant Field Values

EXTLEN

public static final int EXTLEN
See Also:
Constant Field Values

CENVEM

public static final int CENVEM
See Also:
Constant Field Values

CENVER

public static final int CENVER
See Also:
Constant Field Values

CENFLG

public static final int CENFLG
See Also:
Constant Field Values

CENHOW

public static final int CENHOW
See Also:
Constant Field Values

CENTIM

public static final int CENTIM
See Also:
Constant Field Values

CENCRC

public static final int CENCRC
See Also:
Constant Field Values

CENSIZ

public static final int CENSIZ
See Also:
Constant Field Values

CENLEN

public static final int CENLEN
See Also:
Constant Field Values

CENNAM

public static final int CENNAM
See Also:
Constant Field Values

CENEXT

public static final int CENEXT
See Also:
Constant Field Values

CENCOM

public static final int CENCOM
See Also:
Constant Field Values

CENDSK

public static final int CENDSK
See Also:
Constant Field Values

CENATT

public static final int CENATT
See Also:
Constant Field Values

CENATX

public static final int CENATX
See Also:
Constant Field Values

CENOFF

public static final int CENOFF
See Also:
Constant Field Values

ENDSUB

public static final int ENDSUB
See Also:
Constant Field Values

ENDTOT

public static final int ENDTOT
See Also:
Constant Field Values

ENDSIZ

public static final int ENDSIZ
See Also:
Constant Field Values

ENDOFF

public static final int ENDOFF
See Also:
Constant Field Values

ENDCOM

public static final int ENDCOM
See Also:
Constant Field Values
Constructor Detail

ZipEntry

public ZipEntry(String name)
Creates a new zip entry with the specified name.

Parameters:
name - the entry name
Throws:
NullPointerException - if the entry name is null
IllegalArgumentException - if the entry name is longer than 0xFFFF bytes

ZipEntry

public ZipEntry(ZipEntry e)
Creates a new zip entry with fields taken from the specified zip entry.

Parameters:
e - a zip Entry object
Method Detail

getName

public String getName()
Returns the name of the entry.

Returns:
the name of the entry

setTime

public void setTime(long time)
Sets the modification time of the entry.

Parameters:
time - the entry modification time in number of milliseconds since the epoch
See Also:
getTime()

getTime

public long getTime()
Returns the modification time of the entry, or -1 if not specified.

Returns:
the modification time of the entry, or -1 if not specified
See Also:
setTime(long)

setSize

public void setSize(long size)
Sets the uncompressed size of the entry data.

Parameters:
size - the uncompressed size in bytes
Throws:
IllegalArgumentException - if the specified size is less than 0 or greater than 0xFFFFFFFF bytes
See Also:
getSize()

getSize

public long getSize()
Returns the uncompressed size of the entry data, or -1 if not known.

Returns:
the uncompressed size of the entry data, or -1 if not known
See Also:
setSize(long)

getCompressedSize

public long getCompressedSize()
Returns the size of the compressed entry data, or -1 if not known. In the case of a stored entry, the compressed size will be the same as the uncompressed size of the entry.

Returns:
the size of the compressed entry data, or -1 if not known
See Also:
setCompressedSize(long)

setCompressedSize

public void setCompressedSize(long csize)
Sets the size of the compressed entry data.

Parameters:
csize - the compressed size to set to
See Also:
getCompressedSize()

setCrc

public void setCrc(long crc)
Sets the CRC-32 checksum of the uncompressed entry data.

Parameters:
crc - the CRC-32 value
Throws:
IllegalArgumentException - if the specified CRC-32 value is less than 0 or greater than 0xFFFFFFFF
See Also:
getCrc()

getCrc

public long getCrc()
Returns the CRC-32 checksum of the uncompressed entry data, or -1 if not known.

Returns:
the CRC-32 checksum of the uncompressed entry data, or -1 if not known
See Also:
setCrc(long)

setMethod

public void setMethod(int method)
Sets the compression method for the entry.

Parameters:
method - the compression method, either STORED or DEFLATED
Throws:
IllegalArgumentException - if the specified compression method is invalid
See Also:
getMethod()

getMethod

public int getMethod()
Returns the compression method of the entry, or -1 if not specified.

Returns:
the compression method of the entry, or -1 if not specified
See Also:
setMethod(int)

setExtra

public void setExtra(byte[] extra)
Sets the optional extra field data for the entry.

Parameters:
extra - the extra field data bytes
Throws:
IllegalArgumentException - if the length of the specified extra field data is greater than 0xFFFF bytes
See Also:
getExtra()

getExtra

public byte[] getExtra()
Returns the extra field data for the entry, or null if none.

Returns:
the extra field data for the entry, or null if none
See Also:
setExtra(byte[])

setComment

public void setComment(String comment)
Sets the optional comment string for the entry.

Parameters:
comment - the comment string
Throws:
IllegalArgumentException - if the length of the specified comment string is greater than 0xFFFF bytes
See Also:
getComment()

getComment

public String getComment()
Returns the comment string for the entry, or null if none.

Returns:
the comment string for the entry, or null if none
See Also:
setComment(String)

isDirectory

public boolean isDirectory()
Returns true if this is a directory entry. A directory entry is defined to be one whose name ends with a '/'.

Returns:
true if this is a directory entry

toString

public String toString()
Returns a string representation of the ZIP entry.

Overrides:
toString in class Object
Returns:
a string representation of the object.

hashCode

public int hashCode()
Returns the hash code value for this entry.

Overrides:
hashCode in class Object
Returns:
a hash code value for this object.
See Also:
Object.equals(java.lang.Object), Hashtable

clone

public Object clone()
Returns a copy of this entry.

Overrides:
clone in class Object
Returns:
a clone of this instance.
See Also:
Cloneable

Java™ Platform
Standard Ed. 6

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