Create jar file with specified files. - Java Reflection

Java examples for Reflection:Jar

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Description

Create jar file with specified files.

Demo Code

/*//from  w w w  .j a  v  a2  s  .  co m
 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
import java.util.jar.JarOutputStream;
import java.util.jar.Manifest;

public class Main{
    /**
     * Create jar file with specified files. If a specified file does not exist,
     * a new jar entry will be created with the file name itself as the content.
     */
    public static void createJar(String dest, String... files)
            throws IOException {
        try (JarOutputStream jos = new JarOutputStream(
                new FileOutputStream(dest), new Manifest())) {
            for (String file : files) {
                System.out.println(String.format("Adding %s to %s", file,
                        dest));

                // add an archive entry, and write a file
                jos.putNextEntry(new JarEntry(file));
                try (FileInputStream fis = new FileInputStream(file)) {
                    fis.transferTo(jos);
                } catch (FileNotFoundException e) {
                    jos.write(file.getBytes());
                }
            }
        }
        System.out.println();
    }
}

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