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java.util.jar

Class JarEntry

Implemented Interfaces:
Cloneable, java.util.zip.ZipConstants
public class JarEntry
extends ZipEntry
Extension to a ZipEntry that contains manifest attributes and certificates. Both the Atrributes and the Certificates can be null when not set. Note that the getCertificates() method only returns a valid value after all of the data of the entry has been read.

There are no public methods to set the attributes or certificate of an Entru. Only JarEntries created by the classes in java.util.jar will have these properties set.

Since:
1.2

Field Summary

Fields inherited from class java.util.zip.ZipEntry

DEFLATED, STORED

Fields inherited from interface java.util.zip.ZipConstants

CENATT, CENATX, CENCOM, CENCRC, CENDSK, CENEXT, CENFLG, CENHDR, CENHOW, CENLEN, CENNAM, CENOFF, CENSIG, CENSIZ, CENTIM, CENVEM, CENVER, ENDCOM, ENDHDR, ENDOFF, ENDSIG, ENDSIZ, ENDSUB, ENDTOT, EXTCRC, EXTHDR, EXTLEN, EXTSIG, EXTSIZ, LOCCRC, LOCEXT, LOCFLG, LOCHDR, LOCHOW, LOCLEN, LOCNAM, LOCSIG, LOCSIZ, LOCTIM, LOCVER

Constructor Summary

JarEntry(String name)
Creates a new JarEntry with the specified name and no attributes or or certificates.
JarEntry(JarEntry entry)
Creates a new JarEntry with the specified JarEntry as template for all properties of the entry.
JarEntry(ZipEntry entry)
Creates a new JarEntry with the specified ZipEntry as template for all properties of the entry.

Method Summary

Attributes
getAttributes()
Returns a copy of the Attributes set for this entry.
Certificate[]
getCertificates()
Returns a copy of the certificates set for this entry.

Methods inherited from class java.util.zip.ZipEntry

clone, getComment, getCompressedSize, getCrc, getExtra, getMethod, getName, getSize, getTime, hashCode, isDirectory, setComment, setCompressedSize, setCrc, setExtra, setMethod, setSize, setTime, toString

Methods inherited from class java.lang.Object

clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

JarEntry

public JarEntry(String name)
            throws NullPointerException,
                   IllegalArgumentException
Creates a new JarEntry with the specified name and no attributes or or certificates. Calls super(name) so all other (zip)entry fields are null or -1.
Parameters:
name - the name of the new jar entry
Throws:
NullPointerException - when the supplied name is null
IllegalArgumentException - when the supplied name is longer than 65535 bytes

JarEntry

public JarEntry(JarEntry entry)
Creates a new JarEntry with the specified JarEntry as template for all properties of the entry.
Parameters:
entry - the jarEntry whose fields should be copied

JarEntry

public JarEntry(ZipEntry entry)
Creates a new JarEntry with the specified ZipEntry as template for all properties of the entry. Both attributes and certificates will be null.
Parameters:
entry - the ZipEntry whose fields should be copied

Method Details

getAttributes

public Attributes getAttributes()
            throws IOException
Returns a copy of the Attributes set for this entry. When no Attributes are set in the manifest null is returned.
Returns:
a copy of the Attributes set for this entry
Throws:
IOException - This will never be thrown. It is here for binary compatibility.

getCertificates

public Certificate[] getCertificates()
Returns a copy of the certificates set for this entry. When no certificates are set or when not all data of this entry has been read null is returned.

To make sure that this call returns a valid value you must read all data from the JarInputStream for this entry. When you don't need the data for an entry but want to know the certificates that are set for the entry then you can skip all data by calling skip(entry.getSize()) on the JarInputStream for the entry.

Returns:
a copy of the certificates set for this entry
JarEntry.java - Represents an entry in a jar file Copyright (C) 2000, 2006 Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.

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