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// Source: http://www.java2s.com/Code/Java/File-Input-Output/CreateJarfile.htm
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package javaCompile;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.util.jar.JarEntry;
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import java.util.jar.JarOutputStream;
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import java.util.jar.Manifest;
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public class CreateJarFile {
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	public static int BUFFER_SIZE = 10240;
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	public static void createJarArchive(File archiveFile, File[] tobeJared) {
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		try {
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			byte buffer[] = new byte[BUFFER_SIZE];
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			// Open archive file
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			FileOutputStream stream = new FileOutputStream(archiveFile);
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			JarOutputStream out = new JarOutputStream(stream, new Manifest());
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			for (int i = 0; i < tobeJared.length; i++) {
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				if (tobeJared[i] == null || !tobeJared[i].exists()
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						|| tobeJared[i].isDirectory())
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					continue; // Just in case...
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				//System.out.println("Adding " + tobeJared[i].getName());
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				// Add archive entry
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				JarEntry jarAdd = new JarEntry(tobeJared[i].getName());
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				jarAdd.setTime(tobeJared[i].lastModified());
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				out.putNextEntry(jarAdd);
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				// Write file to archive
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				FileInputStream in = new FileInputStream(tobeJared[i]);
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				while (true) {
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					int nRead = in.read(buffer, 0, buffer.length);
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					if (nRead <= 0)
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						break;
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					out.write(buffer, 0, nRead);
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				}
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				in.close();
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			}
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			out.close();
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			stream.close();
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			//System.out.println("Adding completed OK");
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		} catch (Exception ex) {
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			ex.printStackTrace();
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			System.out.println("Error: " + ex.getMessage());
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		}
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	}
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}
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