| java.lang.Object | ||||
| ↳ | java.io.OutputStream | |||
| ↳ | java.io.FilterOutputStream | |||
| ↳ | java.util.zip.DeflaterOutputStream | |||
| ↳ | java.util.zip.ZipOutputStream | |||
 Known Direct Subclasses
|
This class provides an implementation of FilterOutputStream that
compresses data entries into a ZIP-archive output stream.
ZipOutputStream is used to write ZipEntries to the underlying
stream. Output from ZipOutputStream conforms to the ZipFile
file format.
While DeflaterOutputStream can write a compressed ZIP-archive
entry, this extension can write uncompressed entries as well. In this case
special rules apply, for this purpose refer to the file format
specification.
Using ZipOutputStream is a little more complicated than GZIPOutputStream
because ZIP archives are containers that can contain multiple files. This code creates a ZIP
archive containing several files, similar to the zip(1) utility.
OutputStream os = ...
ZipOutputStream zos = new ZipOutputStream(new BufferedOutputStream(os));
try {
for (int i = 0; i < fileCount; ++i) {
String filename = ...
byte[] bytes = ...
ZipEntry entry = new ZipEntry(filename);
zos.putNextEntry(entry);
zos.write(bytes);
zos.closeEntry();
}
} finally {
zos.close();
}
| Constants | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| int | CENATT | ||||||||||
| int | CENATX | ||||||||||
| int | CENCOM | ||||||||||
| int | CENCRC | ||||||||||
| int | CENDSK | ||||||||||
| int | CENEXT | ||||||||||
| int | CENFLG | ||||||||||
| int | CENHDR | ||||||||||
| int | CENHOW | ||||||||||
| int | CENLEN | ||||||||||
| int | CENNAM | ||||||||||
| int | CENOFF | ||||||||||
| long | CENSIG | ||||||||||
| int | CENSIZ | ||||||||||
| int | CENTIM | ||||||||||
| int | CENVEM | ||||||||||
| int | CENVER | ||||||||||
| int | DEFLATED | Indicates deflated entries. | |||||||||
| int | ENDCOM | ||||||||||
| int | ENDHDR | ||||||||||
| int | ENDOFF | ||||||||||
| long | ENDSIG | ||||||||||
| int | ENDSIZ | ||||||||||
| int | ENDSUB | ||||||||||
| int | ENDTOT | ||||||||||
| int | EXTCRC | ||||||||||
| int | EXTHDR | ||||||||||
| int | EXTLEN | ||||||||||
| long | EXTSIG | ||||||||||
| int | EXTSIZ | ||||||||||
| int | LOCCRC | ||||||||||
| int | LOCEXT | ||||||||||
| int | LOCFLG | ||||||||||
| int | LOCHDR | ||||||||||
| int | LOCHOW | ||||||||||
| int | LOCLEN | ||||||||||
| int | LOCNAM | ||||||||||
| long | LOCSIG | ||||||||||
| int | LOCSIZ | ||||||||||
| int | LOCTIM | ||||||||||
| int | LOCVER | ||||||||||
| int | STORED | Indicates uncompressed entries. | |||||||||
|
[Expand]
Inherited Fields | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
From class
java.util.zip.DeflaterOutputStream
| |||||||||||
|
From class
java.io.FilterOutputStream
| |||||||||||
| Public Constructors | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Constructs a new
ZipOutputStream with the specified output
stream. | |||||||||||
| Public Methods | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Closes the current
ZipEntry, if any, and the underlying output
stream. | |||||||||||
Closes the current
ZipEntry. | |||||||||||
Indicates that all entries have been written to the stream.
| |||||||||||
Writes entry information to the underlying stream.
| |||||||||||
Sets the
ZipFile comment associated with the file being written. | |||||||||||
Sets the compression level to be used for writing entry data.
| |||||||||||
Sets the compression method to be used when compressing entry data.
| |||||||||||
Writes data for the current entry to the underlying stream.
| |||||||||||
|
[Expand]
Inherited Methods | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
From class
java.util.zip.DeflaterOutputStream
| |||||||||||
|
From class
java.io.FilterOutputStream
| |||||||||||
|
From class
java.io.OutputStream
| |||||||||||
|
From class
java.lang.Object
| |||||||||||
|
From interface
java.io.Closeable
| |||||||||||
|
From interface
java.io.Flushable
| |||||||||||
Indicates deflated entries.
Indicates uncompressed entries.
Constructs a new ZipOutputStream with the specified output
stream.
| p1 | the OutputStream to write the data to.
|
|---|
Closes the current ZipEntry, if any, and the underlying output
stream. If the stream is already closed this method does nothing.
| IOException | If an error occurs closing the stream. |
|---|
Closes the current ZipEntry. Any entry terminal data is written
to the underlying stream.
| IOException | If an error occurs closing the entry. |
|---|
Indicates that all entries have been written to the stream. Any terminal information is written to the underlying stream.
| IOException | if an error occurs while terminating the stream. |
|---|
Writes entry information to the underlying stream. Data associated with
the entry can then be written using write(). After data is
written closeEntry() must be called to complete the writing of
the entry to the underlying stream.
| ze | the ZipEntry to store. |
|---|
| IOException | If an error occurs storing the entry. |
|---|
Sets the ZipFile comment associated with the file being written.
| comment | the comment associated with the file. |
|---|
Sets the compression level to be used for writing entry data. This level
may be set on a per entry basis. The level must have a value between -1
and 8 according to the Deflater compression level bounds.
| level | the compression level (ranging from -1 to 8). |
|---|
Sets the compression method to be used when compressing entry data.
method must be one of STORED (for no compression) or DEFLATED.
| method | the compression method to use. |
|---|
Writes data for the current entry to the underlying stream.
| buffer | the buffer to write. |
|---|---|
| offset | the index of the first byte in buffer to write. |
| byteCount | the number of bytes in buffer to write. |
| IOException | If an error occurs writing to the stream |
|---|