JarEntry

public class JarEntry
extends ZipEntry

java.lang.Object
   ↳ java.util.zip.ZipEntry
     ↳ java.util.jar.JarEntry


This class is used to represent a JAR file entry.

Summary

Constants

int CENATT

Central directory (CEN) header internal file attributes field offset.

int CENATX

Central directory (CEN) header external file attributes field offset.

int CENCOM

Central directory (CEN) header comment length field offset.

int CENCRC

Central directory (CEN) header uncompressed file crc-32 value field offset.

int CENDSK

Central directory (CEN) header disk number start field offset.

int CENEXT

Central directory (CEN) header extra field length field offset.

int CENFLG

Central directory (CEN) header encrypt, decrypt flags field offset.

int CENHDR

Central directory (CEN) header size in bytes (including signature).

int CENHOW

Central directory (CEN) header compression method field offset.

int CENLEN

Central directory (CEN) header uncompressed size field offset.

int CENNAM

Central directory (CEN) header filename length field offset.

int CENOFF

Central directory (CEN) header LOC header offset field offset.

long CENSIG

Central directory (CEN) header signature.

int CENSIZ

Central directory (CEN) header compressed size field offset.

int CENTIM

Central directory (CEN) header modification time field offset.

int CENVEM

Central directory (CEN) header version made by field offset.

int CENVER

Central directory (CEN) header version needed to extract field offset.

int ENDCOM

End of central directory (END) header zip file comment length field offset.

int ENDHDR

End of central directory (END) header size in bytes (including signature).

int ENDOFF

End of central directory (END) header offset for the first CEN header field offset.

long ENDSIG

End of central directory (END) header signature.

int ENDSIZ

End of central directory (END) header central directory size in bytes field offset.

int ENDSUB

End of central directory (END) header number of entries on this disk field offset.

int ENDTOT

End of central directory (END) header total number of entries field offset.

int EXTCRC

Extra local (EXT) header uncompressed file crc-32 value field offset.

int EXTHDR

Extra local (EXT) header size in bytes (including signature).

int EXTLEN

Extra local (EXT) header uncompressed size field offset.

long EXTSIG

Extra local (EXT) header signature.

int EXTSIZ

Extra local (EXT) header compressed size field offset.

int LOCCRC

Local file (LOC) header uncompressed file crc-32 value field offset.

int LOCEXT

Local file (LOC) header extra field length field offset.

int LOCFLG

Local file (LOC) header general purpose bit flag field offset.

int LOCHDR

Local file (LOC) header size in bytes (including signature).

int LOCHOW

Local file (LOC) header compression method field offset.

int LOCLEN

Local file (LOC) header uncompressed size field offset.

int LOCNAM

Local file (LOC) header filename length field offset.

long LOCSIG

Local file (LOC) header signature.

int LOCSIZ

Local file (LOC) header compressed size field offset.

int LOCTIM

Local file (LOC) header modification time field offset.

int LOCVER

Local file (LOC) header version needed to extract field offset.

Inherited constants

Public constructors

JarEntry(String name)

Creates a new JarEntry for the specified JAR file entry name.

JarEntry(ZipEntry ze)

Creates a new JarEntry with fields taken from the specified ZipEntry object.

JarEntry(JarEntry je)

Creates a new JarEntry with fields taken from the specified JarEntry object.

Public methods

Attributes getAttributes()

Returns the Manifest Attributes for this entry, or null if none.

Certificate[] getCertificates()

Returns the Certificate objects for this entry, or null if none.

CodeSigner[] getCodeSigners()

Returns the CodeSigner objects for this entry, or null if none.

String getRealName()

This method returns the same name that ZipEntry.getName() returns.

Inherited methods

Constants

CENATT

Added in API level 21
public static final int CENATT

Central directory (CEN) header internal file attributes field offset.

Constant Value: 36 (0x00000024)

CENATX

Added in API level 21
public static final int CENATX

Central directory (CEN) header external file attributes field offset.

Constant Value: 38 (0x00000026)

CENCOM

Added in API level 21
public static final int CENCOM

Central directory (CEN) header comment length field offset.

Constant Value: 32 (0x00000020)

CENCRC

Added in API level 21
public static final int CENCRC

Central directory (CEN) header uncompressed file crc-32 value field offset.

Constant Value: 16 (0x00000010)

CENDSK

Added in API level 21
public static final int CENDSK

Central directory (CEN) header disk number start field offset.

Constant Value: 34 (0x00000022)

CENEXT

Added in API level 21
public static final int CENEXT

Central directory (CEN) header extra field length field offset.

Constant Value: 30 (0x0000001e)

CENFLG

Added in API level 21
public static final int CENFLG

Central directory (CEN) header encrypt, decrypt flags field offset.

Constant Value: 8 (0x00000008)

CENHDR

Added in API level 21
public static final int CENHDR

Central directory (CEN) header size in bytes (including signature).

Constant Value: 46 (0x0000002e)

CENHOW

Added in API level 21
public static final int CENHOW

Central directory (CEN) header compression method field offset.

Constant Value: 10 (0x0000000a)

CENLEN

Added in API level 21
public static final int CENLEN

Central directory (CEN) header uncompressed size field offset.

Constant Value: 24 (0x00000018)

CENNAM

Added in API level 21
public static final int CENNAM

Central directory (CEN) header filename length field offset.

Constant Value: 28 (0x0000001c)

CENOFF

Added in API level 21
public static final int CENOFF

Central directory (CEN) header LOC header offset field offset.

Constant Value: 42 (0x0000002a)

CENSIG

Added in API level 21
public static final long CENSIG

Central directory (CEN) header signature.

Constant Value: 33639248 (0x0000000002014b50)

CENSIZ

Added in API level 21
public static final int CENSIZ

Central directory (CEN) header compressed size field offset.

Constant Value: 20 (0x00000014)

CENTIM

Added in API level 21
public static final int CENTIM

Central directory (CEN) header modification time field offset.

Constant Value: 12 (0x0000000c)

CENVEM

Added in API level 21
public static final int CENVEM

Central directory (CEN) header version made by field offset.

Constant Value: 4 (0x00000004)

CENVER

Added in API level 21
public static final int CENVER

Central directory (CEN) header version needed to extract field offset.

Constant Value: 6 (0x00000006)

ENDCOM

Added in API level 21
public static final int ENDCOM

End of central directory (END) header zip file comment length field offset.

Constant Value: 20 (0x00000014)

ENDHDR

Added in API level 21
public static final int ENDHDR

End of central directory (END) header size in bytes (including signature).

Constant Value: 22 (0x00000016)

ENDOFF

Added in API level 21
public static final int ENDOFF

End of central directory (END) header offset for the first CEN header field offset.

Constant Value: 16 (0x00000010)

ENDSIG

Added in API level 21
public static final long ENDSIG

End of central directory (END) header signature.

Constant Value: 101010256 (0x0000000006054b50)

ENDSIZ

Added in API level 21
public static final int ENDSIZ

End of central directory (END) header central directory size in bytes field offset.

Constant Value: 12 (0x0000000c)

ENDSUB

Added in API level 21
public static final int ENDSUB

End of central directory (END) header number of entries on this disk field offset.

Constant Value: 8 (0x00000008)

ENDTOT

Added in API level 21
public static final int ENDTOT

End of central directory (END) header total number of entries field offset.

Constant Value: 10 (0x0000000a)

EXTCRC

Added in API level 21
public static final int EXTCRC

Extra local (EXT) header uncompressed file crc-32 value field offset.

Constant Value: 4 (0x00000004)

EXTHDR

Added in API level 21
public static final int EXTHDR

Extra local (EXT) header size in bytes (including signature).

Constant Value: 16 (0x00000010)

EXTLEN

Added in API level 21
public static final int EXTLEN

Extra local (EXT) header uncompressed size field offset.

Constant Value: 12 (0x0000000c)

EXTSIG

Added in API level 21
public static final long EXTSIG

Extra local (EXT) header signature.

Constant Value: 134695760 (0x0000000008074b50)

EXTSIZ

Added in API level 21
public static final int EXTSIZ

Extra local (EXT) header compressed size field offset.

Constant Value: 8 (0x00000008)

LOCCRC

Added in API level 21
public static final int LOCCRC

Local file (LOC) header uncompressed file crc-32 value field offset.

Constant Value: 14 (0x0000000e)

LOCEXT

Added in API level 21
public static final int LOCEXT

Local file (LOC) header extra field length field offset.

Constant Value: 28 (0x0000001c)

LOCFLG

Added in API level 21
public static final int LOCFLG

Local file (LOC) header general purpose bit flag field offset.

Constant Value: 6 (0x00000006)

LOCHDR

Added in API level 21
public static final int LOCHDR

Local file (LOC) header size in bytes (including signature).

Constant Value: 30 (0x0000001e)

LOCHOW

Added in API level 21
public static final int LOCHOW

Local file (LOC) header compression method field offset.

Constant Value: 8 (0x00000008)

LOCLEN

Added in API level 21
public static final int LOCLEN

Local file (LOC) header uncompressed size field offset.

Constant Value: 22 (0x00000016)

LOCNAM

Added in API level 21
public static final int LOCNAM

Local file (LOC) header filename length field offset.

Constant Value: 26 (0x0000001a)

LOCSIG

Added in API level 21
public static final long LOCSIG

Local file (LOC) header signature.

Constant Value: 67324752 (0x0000000004034b50)

LOCSIZ

Added in API level 21
public static final int LOCSIZ

Local file (LOC) header compressed size field offset.

Constant Value: 18 (0x00000012)

LOCTIM

Added in API level 21
public static final int LOCTIM

Local file (LOC) header modification time field offset.

Constant Value: 10 (0x0000000a)

LOCVER

Added in API level 21
public static final int LOCVER

Local file (LOC) header version needed to extract field offset.

Constant Value: 4 (0x00000004)

Public constructors

JarEntry

Added in API level 1
public JarEntry (String name)

Creates a new JarEntry for the specified JAR file entry name.

Parameters
name String: the JAR file entry name

Throws
NullPointerException if the entry name is null
IllegalArgumentException if the entry name is longer than 0xFFFF bytes.

JarEntry

Added in API level 1
public JarEntry (ZipEntry ze)

Creates a new JarEntry with fields taken from the specified ZipEntry object.

Parameters
ze ZipEntry: the ZipEntry object to create the JarEntry from

JarEntry

Added in API level 1
public JarEntry (JarEntry je)

Creates a new JarEntry with fields taken from the specified JarEntry object.

Parameters
je JarEntry: the JarEntry to copy

Public methods

getAttributes

Added in API level 1
public Attributes getAttributes ()

Returns the Manifest Attributes for this entry, or null if none.

Returns
Attributes the Manifest Attributes for this entry, or null if none

Throws
IOException if an I/O error has occurred

getCertificates

Added in API level 1
public Certificate[] getCertificates ()

Returns the Certificate objects for this entry, or null if none. This method can only be called once the JarEntry has been completely verified by reading from the entry input stream until the end of the stream has been reached. Otherwise, this method will return null.

The returned certificate array comprises all the signer certificates that were used to verify this entry. Each signer certificate is followed by its supporting certificate chain (which may be empty). Each signer certificate and its supporting certificate chain are ordered bottom-to-top (i.e., with the signer certificate first and the (root) certificate authority last).

Returns
Certificate[] the Certificate objects for this entry, or null if none.

getCodeSigners

Added in API level 1
public CodeSigner[] getCodeSigners ()

Returns the CodeSigner objects for this entry, or null if none. This method can only be called once the JarEntry has been completely verified by reading from the entry input stream until the end of the stream has been reached. Otherwise, this method will return null.

The returned array comprises all the code signers that have signed this entry.

Returns
CodeSigner[] the CodeSigner objects for this entry, or null if none.

getRealName

Added in API level 33
public String getRealName ()

This method returns the same name that ZipEntry.getName() returns.

Returns
String the real name of the JarEntry