Java Security SealedObject decode

import java.io.FileInputStream;
import java.io.ObjectInputStream;
import java.security.KeyStore;
import java.security.PrivateKey;

import javax.crypto.SealedObject;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;

///*from  www. ja v  a  2 s .co m*/
public class Main {
   public static void main(String args[]) throws Exception {
      ObjectInputStream ois = new ObjectInputStream(new FileInputStream("key"));

      SealedObject so = (SealedObject) ois.readObject();

      char[] password = "123456".toCharArray();
      KeyStore ks = KeyStore.getInstance("JKS");
      ks.load(new FileInputStream("test.ks"), password);
      PrivateKey pri = (PrivateKey) ks.getKey("test", password);

      byte[] bytes = (byte[]) so.getObject(pri);
      ois = new ObjectInputStream(new FileInputStream("data"));
      so = (SealedObject) ois.readObject();
      SecretKey sk = new SecretKeySpec(bytes, 0, bytes.length, so.getAlgorithm());

      System.out.println(so.getObject(sk));
   }
}