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Apache Commons Compress defines an API for working with compression and archive formats. These include bzip2, gzip, pack200, LZMA, XZ, Snappy, traditional Unix Compress, DEFLATE, DEFLATE64, LZ4, Brotli, Zstandard and ar, cpio, jar, tar, zip, dump, 7z, arj.

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.commons.compress.archivers.jar;

import java.security.cert.Certificate;
import java.util.jar.Attributes;
import java.util.jar.JarEntry;
import java.util.zip.ZipEntry;
import java.util.zip.ZipException;

import org.apache.commons.compress.archivers.zip.ZipArchiveEntry;

/**
 * JAR archive entry.
 *
 * @NotThreadSafe (parent is not thread-safe)
 */
public class JarArchiveEntry extends ZipArchiveEntry {

    /**
     * Constructs a new instance.
     *
     * @param entry See super.
     * @throws ZipException See super.
     */
    public JarArchiveEntry(final JarEntry entry) throws ZipException {
        super(entry);
    }

    /**
     * Constructs a new instance.
     *
     * @param name See super.
     */
    public JarArchiveEntry(final String name) {
        super(name);
    }

    /**
     * Constructs a new instance.
     *
     * @param entry See super.
     * @throws ZipException See super.
     */
    public JarArchiveEntry(final ZipArchiveEntry entry) throws ZipException {
        super(entry);
    }

    /**
     * Constructs a new instance.
     *
     * @param entry See super.
     * @throws ZipException See super.
     */
    public JarArchiveEntry(final ZipEntry entry) throws ZipException {
        super(entry);
    }

    /**
     * Gets a copy of the list of certificates or null if there are none.
     *
     * @return Always returns null in the current implementation
     * @deprecated since 1.5, not currently implemented
     */
    @Deprecated
    public Certificate[] getCertificates() {
        //
        // Note, the method
        // Certificate[] java.util.jar.JarEntry.getCertificates()
        // also returns null or the list of certificates (but not copied)
        //
        // see https://issues.apache.org/jira/browse/COMPRESS-18 for discussion
        return null;
    }

    /**
     * This method is not implemented and won't ever be. The JVM equivalent has a different name {@link java.util.jar.JarEntry#getAttributes()}
     *
     * @deprecated since 1.5, do not use; always returns null
     * @return Always returns null.
     */
    @Deprecated
    public Attributes getManifestAttributes() {
        // see https://issues.apache.org/jira/browse/COMPRESS-18 for discussion
        return null;
    }

}