import java.io.*;
import java.util.*;
import java.util.jar.*;

public class JarCreate {
   /**
    * main()
    */
   public static void main(String[] args) throws IOException {
      // Create the jar file, using the first command line argument as the
      // file name (clobbering the file if it exists).

      String jarName = args[0];
      JarOutputStream jar = new JarOutputStream(new FileOutputStream(jarName),
         new Manifest());
      System.out.println(jarName + " created.");

      try {
         // Allocate a buffer for reading the input files.

         byte[] buffer = new byte[1024];
         int bytesRead;

         // Loop through the file names provided on the command-line.

         for (int i = 1; i < args.length; i ++) {
            // Get the file name.

            String fileName = args[i];
            
            try {
               // Open the file.
               
               FileInputStream file = new FileInputStream(fileName);

               try {
                  // Create a jar entry and add it to the jar.
                  
                  JarEntry entry = new JarEntry(fileName);
                  jar.putNextEntry(entry);

                  // Read the file the file and write it to the jar.

                  while ((bytesRead = file.read(buffer)) != -1) {
                     jar.write(buffer, 0, bytesRead);
                  }

                  System.out.println(entry.getName() + " added.");
               }
               catch (Exception ex) {
                  System.out.println(ex);
               }
               finally {
                  file.close();
               }
            }
            catch (IOException ex) {
               System.out.println(ex);
            }
         }
      }
      finally {
         jar.close();
         System.out.println(jarName + " closed.");
      }
   }
}