import javax.crypto.*;
import javax.crypto.interfaces.*;
import javax.crypto.spec.*;
                                                                                
                                                                                
public class AES
{

  public static void main(String[] args) throws Exception
  {
    String plainText = "要加密的明文";
    Cipher cipher = Cipher.getInstance("AES");                                                                   
                                                                                
  }
                                                                                
}