java.util.jar
Class JarOutputStream

java.lang.Object
  |
  +--java.io.OutputStream
        |
        +--java.io.FilterOutputStream
              |
              +--java.util.zip.DeflaterOutputStream
                    |
                    +--java.util.zip.ZipOutputStream
                          |
                          +--java.util.jar.JarOutputStream

public class JarOutputStream

extends ZipOutputStream

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.

Since:

JDK1.2

See Also:

Manifest, ZipOutputStream

Fields inherited from class java.util.zip.ZipOutputStream

DEFLATED, STORED

Fields inherited from class java.util.zip.DeflaterOutputStream

buf, def

Fields inherited from class java.io.FilterOutputStream

out

Constructor Summary

JarOutputStream(OutputStream out)
Creates a new JarOutputStream with no manifest.

JarOutputStream(OutputStream out, Manifest man)
Creates a new JarOutputStream with the specified Manifest.

Method Summary

void	putNextEntry(ZipEntry ze) Begins writing a new JAR file entry and positions the stream to the start of the entry data.

Methods inherited from class java.util.zip.ZipOutputStream

close, closeEntry, finish, setComment, setLevel, setMethod, write

Methods inherited from class java.util.zip.DeflaterOutputStream

deflate, write

Methods inherited from class java.io.FilterOutputStream

flush, write

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JarOutputStream

public JarOutputStream(OutputStream out,
                       Manifest man)
                throws IOException

Creates a new JarOutputStream with the specified Manifest. The manifest is written as the first entry to the output stream.

Parameters:

out - the actual output stream

man - the optional Manifest

Throws:

IOException - if an I/O error has occurred

JarOutputStream

public JarOutputStream(OutputStream out)
                throws IOException

Creates a new JarOutputStream with no manifest.

Parameters:

out - the actual output stream

Throws:

IOException - if an I/O error has occurred

Method Detail

putNextEntry

public void putNextEntry(ZipEntry ze)
                  throws IOException

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. The current time will be used if the entry has no set modification time.

Parameters:

e - the ZIP/JAR entry to be written

Throws:

ZipException - if a ZIP error has occurred

IOException - if an I/O error has occurred

Overrides:

putNextEntry in class ZipOutputStream