try 
    {
      InputStream in =  new  FileInputStream("infile.dat");
      OutputStream out =  new  FileOutputStream("outfile.dat");
      Cipher cipher = Cipher.getInstance("AES");
      cipher.init(Cipher.ENCRYPT_MODE, cryptKey);

       int  blockSize = cipher.getBlockSize();
       int  outputSize = cipher.getOutputSize(blockSize);
       byte [] inBytes =  new   byte [blockSize];
       byte [] outBytes =  new   byte [outputSize];

       int  inLength =  0 ;
       boolean  more = true;
       while (more)
      {
        inLength = in.read(inBytes);
         if (inLength==blockSize)
        {
           int  outLength = cipher.update(inBytes,  0 , blockSize, outBytes);
          out.write(outBytes,  0 , outLength);
        }  else 
          more = false;
      }
       if (inLength> 0 )
        outBytes = cipher.doFinal(inBytes,  0 , inLength);
       else 
        outBytes = cipher.doFinal();
      out.write(outBytes);

      in.close();
      out.close();

    }  catch (Exception e)  {}

ByteArrayOutputStream buffer =  new  ByteArrayOutputStream();
	     try 
	    {
		Cipher cipher = Cipher.getInstance("AES");
		cipher.init(Cipher.DECRYPT_MODE, key);


		 int  blockSize = cipher.getBlockSize();
		 int  outputSize = cipher.getOutputSize(blockSize);
		 byte [] inBytes =  new   byte [blockSize];
		 byte [] outBytes =  new   byte [outputSize];

		 int  inLength =  0 ;
		 boolean  more = true;
		 int  blocksRead =  0 ;

		 while  (more)
		{
		    
                     if (more){
                        inLength =  0 ;
			 for  ( int  i =  0 ; i < blockSize; i++)
			{
			     if  ((blocksRead * blockSize + i) < totalLen)
			    {
				inBytes[i] = buffile[blocksRead * blockSize + i];
				inLength++;
			    }
			}
                        blocksRead++;
                        
		    }

		     if  (inLength == blockSize)
		    {
                         if (  ((blocksRead- 1 )*blockSize+inLength)<totalLen ){
                             int  outLength = cipher.update(inBytes,  0 , blockSize, outBytes);
                            buffer.write(outBytes,  0 , outLength);
                        } else {
                            more = false;
                        }
		    }  else 
		    {
			more = false;
			 if  (inLength ==  0 )
			{
			    inLength = - 1 ;
			}
		    }
		}
		 if  (inLength >  0 )
		    outBytes = cipher.doFinal(inBytes,  0 , inLength);
		 else 
		    outBytes = cipher.doFinal();
		buffer.write(outBytes);

	    }  catch  (Exception e){}

Given  final  block not properly padded