Added in API level 1

Summary: Constants | Inherited Constants | Ctors | Methods | Inherited Methods

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

From class java.util.zip.ZipEntry 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 DEFLATED Compression method for compressed (deflated) entries. 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. int STORED Compression method for uncompressed entries.

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() Returns the real name of this JarEntry.

Inherited methods
From class java.util.zip.ZipEntry Object clone() Returns a copy of this entry. String getComment() Returns the comment string for the entry. long getCompressedSize() Returns the size of the compressed entry data. long getCrc() Returns the CRC-32 checksum of the uncompressed entry data. FileTime getCreationTime() Returns the creation time of the entry. byte[] getExtra() Returns the extra field data for the entry. FileTime getLastAccessTime() Returns the last access time of the entry. FileTime getLastModifiedTime() Returns the last modification time of the entry. int getMethod() Returns the compression method of the entry. String getName() Returns the name of the entry. long getSize() Returns the uncompressed size of the entry data. long getTime() Returns the last modification time of the entry. LocalDateTime getTimeLocal() Returns the last modification time of the entry in local date-time. 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. ZipEntry setCreationTime(FileTime time) Sets the creation time of the entry. void setExtra(byte[] extra) Sets the optional extra field data for the entry. ZipEntry setLastAccessTime(FileTime time) Sets the last access time of the entry. ZipEntry setLastModifiedTime(FileTime time) Sets the last modification time of 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 last modification time of the entry. void setTimeLocal(LocalDateTime time) Sets the last modification time of the entry in local date-time. String toString() Returns a string representation of the ZIP entry.
From class java.lang.Object Object clone() Creates and returns a copy of this object. boolean equals(Object obj) Indicates whether some other object is "equal to" this one. void finalize() Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. final Class<?> getClass() Returns the runtime class of this Object. int hashCode() Returns a hash code value for the object. final void notify() Wakes up a single thread that is waiting on this object's monitor. final void notifyAll() Wakes up all threads that are waiting on this object's monitor. String toString() Returns a string representation of the object. final void wait(long timeoutMillis, int nanos) Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed. final void wait(long timeoutMillis) Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed. final void wait() Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

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 ()

Returns the real name of this JarEntry. If this JarEntry is an entry of a multi-release jar file and the JarFile is configured to be processed as such, the name returned by this method is the path name of the versioned entry that the JarEntry represents, rather than the path name of the base entry that ZipEntry.getName() returns. If the JarEntry does not represent a versioned entry of a multi-release JarFile or the JarFile is not configured for processing a multi-release jar file, this method returns the same name that ZipEntry.getName() returns.

Returns
String	the real name of the JarEntry