Class JarOutputStream
java.lang.Object
java.io.OutputStream
java.io.FilterOutputStream
java.util.zip.DeflaterOutputStream
java.util.zip.ZipOutputStream
java.util.jar.JarOutputStream
- All Implemented Interfaces:
Closeable
,Flushable
,AutoCloseable
The
JarOutputStream
class is used to write the contents
of a JAR file to any output stream. It extends the class
java.util.zip.ZipOutputStream
with support
for writing an optional Manifest
entry. The
Manifest
can be used to specify meta-information about
the JAR file and its entries.
Unless otherwise noted, passing a null
argument to a constructor
or method in this class will cause a NullPointerException
to be
thrown.
- Since:
- 1.2
- See Also:
-
Field Summary
Modifier and TypeFieldDescriptionstatic final int
Central directory (CEN) header internal file attributes field offset.static final int
Central directory (CEN) header external file attributes field offset.static final int
Central directory (CEN) header comment length field offset.static final int
Central directory (CEN) header uncompressed file crc-32 value field offset.static final int
Central directory (CEN) header disk number start field offset.static final int
Central directory (CEN) header extra field length field offset.static final int
Central directory (CEN) header encrypt, decrypt flags field offset.static final int
Central directory (CEN) header size in bytes (including signature).static final int
Central directory (CEN) header compression method field offset.static final int
Central directory (CEN) header uncompressed size field offset.static final int
Central directory (CEN) header filename length field offset.static final int
Central directory (CEN) header LOC header offset field offset.static final long
Central directory (CEN) header signature.static final int
Central directory (CEN) header compressed size field offset.static final int
Central directory (CEN) header modification time field offset.static final int
Central directory (CEN) header version made by field offset.static final int
Central directory (CEN) header version needed to extract field offset.static final int
End of central directory (END) header ZIP file comment length field offset.static final int
End of central directory (END) header size in bytes (including signature).static final int
End of central directory (END) header offset for the first CEN header field offset.static final long
End of central directory (END) header signature.static final int
End of central directory (END) header central directory size in bytes field offset.static final int
End of central directory (END) header number of entries on this disk field offset.static final int
End of central directory (END) header total number of entries field offset.static final int
Extra local (EXT) header uncompressed file crc-32 value field offset.static final int
Extra local (EXT) header size in bytes (including signature).static final int
Extra local (EXT) header uncompressed size field offset.static final long
Extra local (EXT) header signature.static final int
Extra local (EXT) header compressed size field offset.static final int
Local file (LOC) header uncompressed file crc-32 value field offset.static final int
Local file (LOC) header extra field length field offset.static final int
Local file (LOC) header general purpose bit flag field offset.static final int
Local file (LOC) header size in bytes (including signature).static final int
Local file (LOC) header compression method field offset.static final int
Local file (LOC) header uncompressed size field offset.static final int
Local file (LOC) header filename length field offset.static final long
Local file (LOC) header signature.static final int
Local file (LOC) header compressed size field offset.static final int
Local file (LOC) header modification time field offset.static final int
Local file (LOC) header version needed to extract field offset.Fields declared in class java.util.zip.ZipOutputStream
DEFLATED, STORED
Fields declared in class java.util.zip.DeflaterOutputStream
buf, def
Fields declared in class java.io.FilterOutputStream
out
-
Constructor Summary
ConstructorDescriptionCreates a newJarOutputStream
with no manifest.JarOutputStream
(OutputStream out, Manifest man) Creates a newJarOutputStream
with the specifiedManifest
. -
Method Summary
Modifier and TypeMethodDescriptionvoid
putNextEntry
(ZipEntry ze) Begins writing a new JAR file entry and positions the stream to the start of the entry data.Methods declared in class java.util.zip.ZipOutputStream
close, closeEntry, finish, setComment, setLevel, setMethod, write
Methods declared in class java.util.zip.DeflaterOutputStream
deflate, flush, write
Methods declared in class java.io.FilterOutputStream
write
Methods declared in class java.io.OutputStream
nullOutputStream
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Field Details
-
LOCSIG
static final long LOCSIGLocal file (LOC) header signature.- See Also:
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EXTSIG
static final long EXTSIGExtra local (EXT) header signature.- See Also:
-
CENSIG
static final long CENSIGCentral directory (CEN) header signature.- See Also:
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ENDSIG
static final long ENDSIGEnd of central directory (END) header signature.- See Also:
-
LOCHDR
static final int LOCHDRLocal file (LOC) header size in bytes (including signature).- See Also:
-
EXTHDR
static final int EXTHDRExtra local (EXT) header size in bytes (including signature).- See Also:
-
CENHDR
static final int CENHDRCentral directory (CEN) header size in bytes (including signature).- See Also:
-
ENDHDR
static final int ENDHDREnd of central directory (END) header size in bytes (including signature).- See Also:
-
LOCVER
static final int LOCVERLocal file (LOC) header version needed to extract field offset.- See Also:
-
LOCFLG
static final int LOCFLGLocal file (LOC) header general purpose bit flag field offset.- See Also:
-
LOCHOW
static final int LOCHOWLocal file (LOC) header compression method field offset.- See Also:
-
LOCTIM
static final int LOCTIMLocal file (LOC) header modification time field offset.- See Also:
-
LOCCRC
static final int LOCCRCLocal file (LOC) header uncompressed file crc-32 value field offset.- See Also:
-
LOCSIZ
static final int LOCSIZLocal file (LOC) header compressed size field offset.- See Also:
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LOCLEN
static final int LOCLENLocal file (LOC) header uncompressed size field offset.- See Also:
-
LOCNAM
static final int LOCNAMLocal file (LOC) header filename length field offset.- See Also:
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LOCEXT
static final int LOCEXTLocal file (LOC) header extra field length field offset.- See Also:
-
EXTCRC
static final int EXTCRCExtra local (EXT) header uncompressed file crc-32 value field offset.- See Also:
-
EXTSIZ
static final int EXTSIZExtra local (EXT) header compressed size field offset.- See Also:
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EXTLEN
static final int EXTLENExtra local (EXT) header uncompressed size field offset.- See Also:
-
CENVEM
static final int CENVEMCentral directory (CEN) header version made by field offset.- See Also:
-
CENVER
static final int CENVERCentral directory (CEN) header version needed to extract field offset.- See Also:
-
CENFLG
static final int CENFLGCentral directory (CEN) header encrypt, decrypt flags field offset.- See Also:
-
CENHOW
static final int CENHOWCentral directory (CEN) header compression method field offset.- See Also:
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CENTIM
static final int CENTIMCentral directory (CEN) header modification time field offset.- See Also:
-
CENCRC
static final int CENCRCCentral directory (CEN) header uncompressed file crc-32 value field offset.- See Also:
-
CENSIZ
static final int CENSIZCentral directory (CEN) header compressed size field offset.- See Also:
-
CENLEN
static final int CENLENCentral directory (CEN) header uncompressed size field offset.- See Also:
-
CENNAM
static final int CENNAMCentral directory (CEN) header filename length field offset.- See Also:
-
CENEXT
static final int CENEXTCentral directory (CEN) header extra field length field offset.- See Also:
-
CENCOM
static final int CENCOMCentral directory (CEN) header comment length field offset.- See Also:
-
CENDSK
static final int CENDSKCentral directory (CEN) header disk number start field offset.- See Also:
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CENATT
static final int CENATTCentral directory (CEN) header internal file attributes field offset.- See Also:
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CENATX
static final int CENATXCentral directory (CEN) header external file attributes field offset.- See Also:
-
CENOFF
static final int CENOFFCentral directory (CEN) header LOC header offset field offset.- See Also:
-
ENDSUB
static final int ENDSUBEnd of central directory (END) header number of entries on this disk field offset.- See Also:
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ENDTOT
static final int ENDTOTEnd of central directory (END) header total number of entries field offset.- See Also:
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ENDSIZ
static final int ENDSIZEnd of central directory (END) header central directory size in bytes field offset.- See Also:
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ENDOFF
static final int ENDOFFEnd of central directory (END) header offset for the first CEN header field offset.- See Also:
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ENDCOM
static final int ENDCOMEnd of central directory (END) header ZIP file comment length field offset.- See Also:
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Constructor Details
-
JarOutputStream
Creates a newJarOutputStream
with the specifiedManifest
. The manifest is written as the first entry to the output stream.- Parameters:
out
- the actual output streamman
- the optionalManifest
- Throws:
IOException
- if an I/O error has occurred
-
JarOutputStream
Creates a newJarOutputStream
with no manifest.- Parameters:
out
- the actual output stream- Throws:
IOException
- if an I/O error has occurred
-
-
Method Details
-
putNextEntry
Begins writing a new JAR file entry and positions the stream to the start of the entry data. This method will also close any previous entry.The default compression method will be used if no compression method was specified for the entry. When writing a compressed (DEFLATED) entry, and the compressed size has not been explicitly set with the
ZipEntry.setCompressedSize(long)
method, then the compressed size will be set to the actual compressed size after deflation.The current time will be used if the entry has no set modification time.
- Overrides:
putNextEntry
in classZipOutputStream
- Parameters:
ze
- the ZIP/JAR entry to be written- Throws:
ZipException
- if a ZIP error has occurredIOException
- if an I/O error has occurred
-