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<TITLE>Writing a JAR File Manifest to a File (Java Developers Almanac Example)
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    <B><A HREF="../java.util.jar/pkg.html">java.util.jar</A></B><font color="#666666" class="xsmall-font">
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  <h3>e383. Writing a JAR File Manifest to a File</h3>

The format of a manifest file is described in:


<pre>    http://java.sun.com/products/jdk/1.2/docs/guide/jar/manifest.html
</pre>
This example retrieves the manifest from a JAR file and writes the
manifest contents to a file.


<pre>    try {
        // Open the JAR file
        JarFile jarfile = new JarFile(<font color="#0066ff"><i>"filename.jar"</i></font>);
    
        // Get the manifest
        Manifest manifest = jarfile.getManifest();
    
        // Write the manifest to a file
        OutputStream fos = new FileOutputStream(<font color="#0066ff"><i>"manifest"</i></font>);
        jarfile.getManifest().write(fos);
        fos.close();
    } catch (IOException e) {
    }
</pre>
Here's an example of a manifest file:

<pre>    Manifest-Version: 1.0
    Specification-Title: Java Platform API Specification
    Specification-Version: 1.4
    Implementation-Title: Java Runtime Environment
    Implementation-Version: 1.4.0-rc
    Created-By: 1.4.0-rc (Sun Microsystems Inc.)
    Implementation-Vendor: Sun Microsystems, Inc.
    Specification-Vendor: Sun Microsystems, Inc.
    
    Name: javax/swing/JScrollPane.class
    Java-Bean: True
    
    Name: javax/swing/JCheckBoxMenuItem.class
    Java-Bean: True
    
    Name: javax/swing/JTabbedPane.class
    Java-Bean: True
    
    Name: javax/swing/JMenuItem.class
    Java-Bean: True
    
    Name: javax/swing/JTable.class
    Java-Bean: True
</pre>
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            &nbsp;<b>Related Examples</b></font></td>
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e380. <a class="eglink" href="GetManifest.html?l=rel">
    Listing the Entries of a JAR File Manifest
</a>
<br>

e381. <a class="eglink" href="GetMainAttr.html?l=rel">
    Listing the Main Attributes in a JAR File Manifest
</a>
<br>

e382. <a class="eglink" href="CreateManifest.html?l=rel">
    Creating a Manifest for a JAR File
</a>
<br>

e384. <a class="eglink" href="CreateJar.html?l=rel">
    Creating and Signing a JAR File Using jarsigner
</a>
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