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java.util.zip
Class ZipEntry

java.lang.Object
  |
  +--java.util.zip.ZipEntry

All Implemented Interfaces:

Cloneable, java.util.zip.ZipConstants

Direct Known Subclasses:

JarEntry

public class ZipEntry

extends Object

implements java.util.zip.ZipConstants, 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.

DEFLATED

public static final int DEFLATED

Compression method for compressed (deflated) entries.

LOCSIG

public static final long LOCSIG

EXTSIG

public static final long EXTSIG

CENSIG

public static final long CENSIG

ENDSIG

public static final long ENDSIG

LOCHDR

public static final int LOCHDR

EXTHDR

public static final int EXTHDR

CENHDR

public static final int CENHDR

ENDHDR

public static final int ENDHDR

LOCVER

public static final int LOCVER

LOCFLG

public static final int LOCFLG

LOCHOW

public static final int LOCHOW

LOCTIM

public static final int LOCTIM

LOCCRC

public static final int LOCCRC

LOCSIZ

public static final int LOCSIZ

LOCLEN

public static final int LOCLEN

LOCNAM

public static final int LOCNAM

LOCEXT

public static final int LOCEXT

EXTCRC

public static final int EXTCRC

EXTSIZ

public static final int EXTSIZ

EXTLEN

public static final int EXTLEN

CENVEM

public static final int CENVEM

CENVER

public static final int CENVER

CENFLG

public static final int CENFLG

CENHOW

public static final int CENHOW

CENTIM

public static final int CENTIM

CENCRC

public static final int CENCRC

CENSIZ

public static final int CENSIZ

CENLEN

public static final int CENLEN

CENNAM

public static final int CENNAM

CENEXT

public static final int CENEXT

CENCOM

public static final int CENCOM

CENDSK

public static final int CENDSK

CENATT

public static final int CENATT

CENATX

public static final int CENATX

CENOFF

public static final int CENOFF

ENDSUB

public static final int ENDSUB

ENDTOT

public static final int ENDTOT

ENDSIZ

public static final int ENDSIZ

ENDOFF

public static final int ENDOFF

ENDCOM

public static final int ENDCOM

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:

setCrc(long)

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:

getCrc()

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 0xFFFFF 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

Following copied from class: java.lang.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

Following copied from class: java.lang.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

Following copied from class: java.lang.Object

Returns:

a clone of this instance.

Throws:

CloneNotSupportedException - if the object's class does not support the Cloneable interface. Subclasses that override the clone method can also throw this exception to indicate that an instance cannot be cloned.

OutOfMemoryError - if there is not enough memory.

See Also:

Cloneable