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