Known Direct Subclasses
JarOutputStream |
The JarOutputStream class is used to write the contents
of a JAR file to any output stream. |
|
Class Overview
This class implements an output stream filter for writing files in the
ZIP file format. Includes support for both compressed and uncompressed
entries.
Summary
Public Methods |
void
|
close()
Closes the ZIP output stream as well as the stream being filtered.
|
void
|
closeEntry()
Closes the current ZIP entry and positions the stream for writing
the next entry.
|
void
|
finish()
Finishes writing the contents of the ZIP output stream without closing
the underlying stream.
|
void
|
putNextEntry(ZipEntry e)
Begins writing a new ZIP file entry and positions the stream to the
start of the entry data.
|
void
|
setComment(String comment)
Sets the ZIP file comment.
|
void
|
setLevel(int level)
Sets the compression level for subsequent entries which are DEFLATED.
|
void
|
setMethod(int method)
Sets the default compression method for subsequent entries.
|
synchronized
void
|
write(byte[] b, int off, int len)
Writes an array of bytes to the current ZIP entry data.
|
[Expand]
Inherited Methods |
From class
java.util.zip.DeflaterOutputStream
void
|
close()
Writes remaining compressed data to the output stream and closes the
underlying stream.
|
void
|
deflate()
Writes next block of compressed data to the output stream.
|
void
|
finish()
Finishes writing compressed data to the output stream without closing
the underlying stream.
|
void
|
write(byte[] b, int off, int len)
Writes an array of bytes to the compressed output stream.
|
void
|
write(int b)
Writes a byte to the compressed output stream.
|
|
From class
java.io.FilterOutputStream
void
|
close()
Closes this output stream and releases any system resources
associated with the stream.
|
void
|
flush()
Flushes this output stream and forces any buffered output bytes
to be written out to the stream.
|
void
|
write(byte[] b, int off, int len)
Writes len bytes from the specified
byte array starting at offset off to
this output stream.
|
void
|
write(byte[] b)
Writes b.length bytes to this output stream.
|
void
|
write(int b)
Writes the specified byte to this output stream.
|
|
From class
java.io.OutputStream
void
|
close()
Closes this output stream and releases any system resources
associated with this stream.
|
void
|
flush()
Flushes this output stream and forces any buffered output bytes
to be written out.
|
void
|
write(byte[] b, int off, int len)
Writes len bytes from the specified byte array
starting at offset off to this output stream.
|
void
|
write(byte[] b)
Writes b.length bytes from the specified byte array
to this output stream.
|
abstract
void
|
write(int b)
Writes the specified byte to this output stream.
|
|
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()
Causes the current thread to wait until another thread invokes the
notify() method or the
notifyAll() method for this object.
|
final
void
|
wait(long timeout, int nanos)
Causes the current thread to wait until another thread invokes the
notify() method or the
notifyAll() method for this object, or
some other thread interrupts the current thread, or a certain
amount of real time has elapsed.
|
final
void
|
wait(long timeout)
Causes the current thread to wait until either another thread invokes the
notify() method or the
notifyAll() method for this object, or a
specified amount of time has elapsed.
|
|
From interface
java.io.Closeable
abstract
void
|
close()
Closes this stream and releases any system resources associated
with it.
|
|
From interface
java.io.Flushable
abstract
void
|
flush()
Flushes this stream by writing any buffered output to the underlying
stream.
|
|
Constants
public
static
final
int
CENATT
Constant Value:
36
(0x00000024)
public
static
final
int
CENATX
Constant Value:
38
(0x00000026)
public
static
final
int
CENCOM
Constant Value:
32
(0x00000020)
public
static
final
int
CENCRC
Constant Value:
16
(0x00000010)
public
static
final
int
CENDSK
Constant Value:
34
(0x00000022)
public
static
final
int
CENEXT
Constant Value:
30
(0x0000001e)
public
static
final
int
CENFLG
Constant Value:
8
(0x00000008)
public
static
final
int
CENHDR
Constant Value:
46
(0x0000002e)
public
static
final
int
CENHOW
Constant Value:
10
(0x0000000a)
public
static
final
int
CENLEN
Constant Value:
24
(0x00000018)
public
static
final
int
CENNAM
Constant Value:
28
(0x0000001c)
public
static
final
int
CENOFF
Constant Value:
42
(0x0000002a)
public
static
final
long
CENSIG
Constant Value:
33639248
(0x0000000002014b50)
public
static
final
int
CENSIZ
Constant Value:
20
(0x00000014)
public
static
final
int
CENTIM
Constant Value:
12
(0x0000000c)
public
static
final
int
CENVEM
Constant Value:
4
(0x00000004)
public
static
final
int
CENVER
Constant Value:
6
(0x00000006)
public
static
final
int
DEFLATED
Compression method for compressed (DEFLATED) entries.
Constant Value:
8
(0x00000008)
public
static
final
int
ENDCOM
Constant Value:
20
(0x00000014)
public
static
final
int
ENDHDR
Constant Value:
22
(0x00000016)
public
static
final
int
ENDOFF
Constant Value:
16
(0x00000010)
public
static
final
long
ENDSIG
Constant Value:
101010256
(0x0000000006054b50)
public
static
final
int
ENDSIZ
Constant Value:
12
(0x0000000c)
public
static
final
int
ENDSUB
Constant Value:
8
(0x00000008)
public
static
final
int
ENDTOT
Constant Value:
10
(0x0000000a)
public
static
final
int
EXTCRC
Constant Value:
4
(0x00000004)
public
static
final
int
EXTHDR
Constant Value:
16
(0x00000010)
public
static
final
int
EXTLEN
Constant Value:
12
(0x0000000c)
public
static
final
long
EXTSIG
Constant Value:
134695760
(0x0000000008074b50)
public
static
final
int
EXTSIZ
Constant Value:
8
(0x00000008)
public
static
final
int
LOCCRC
Constant Value:
14
(0x0000000e)
public
static
final
int
LOCEXT
Constant Value:
28
(0x0000001c)
public
static
final
int
LOCFLG
Constant Value:
6
(0x00000006)
public
static
final
int
LOCHDR
Constant Value:
30
(0x0000001e)
public
static
final
int
LOCHOW
Constant Value:
8
(0x00000008)
public
static
final
int
LOCLEN
Constant Value:
22
(0x00000016)
public
static
final
int
LOCNAM
Constant Value:
26
(0x0000001a)
public
static
final
long
LOCSIG
Constant Value:
67324752
(0x0000000004034b50)
public
static
final
int
LOCSIZ
Constant Value:
18
(0x00000012)
public
static
final
int
LOCTIM
Constant Value:
10
(0x0000000a)
public
static
final
int
LOCVER
Constant Value:
4
(0x00000004)
public
static
final
int
STORED
Compression method for uncompressed (STORED) entries.
Constant Value:
0
(0x00000000)
Public Constructors
public
ZipOutputStream
(OutputStream out)
Creates a new ZIP output stream.
Parameters
out
| the actual output stream
|
Public Methods
public
void
close
()
Closes the ZIP output stream as well as the stream being filtered.
public
void
closeEntry
()
Closes the current ZIP entry and positions the stream for writing
the next entry.
public
void
finish
()
Finishes writing the contents of the ZIP output stream without closing
the underlying stream. Use this method when applying multiple filters
in succession to the same output stream.
public
void
putNextEntry
(ZipEntry e)
Begins writing a new ZIP file entry and positions the stream to the
start of the entry data. Closes the current entry if still active.
The default compression method will be used if no compression method
was specified for the entry, and the current time will be used if
the entry has no set modification time.
Parameters
e
| the ZIP entry to be written |
public
void
setComment
(String comment)
Sets the ZIP file comment.
Parameters
comment
| the comment string |
public
void
setLevel
(int level)
Sets the compression level for subsequent entries which are DEFLATED.
The default setting is DEFAULT_COMPRESSION.
Parameters
level
| the compression level (0-9) |
public
void
setMethod
(int method)
Sets the default compression method for subsequent entries. This
default will be used whenever the compression method is not specified
for an individual ZIP file entry, and is initially set to DEFLATED.
Parameters
method
| the default compression method |
public
synchronized
void
write
(byte[] b, int off, int len)
Writes an array of bytes to the current ZIP entry data. This method
will block until all the bytes are written.
Parameters
b
| the data to be written |
off
| the start offset in the data |
len
| the number of bytes that are written |