Connecting a Java card to the simulator failed

Question

I am trying to test a Java Card applet to establish a connection with a simulator such as cref:

try { sckClient = new Socket("localhost", 9025); InputStream is = sckClient.getInputStream(); OutputStream os = sckClient.getOutputStream(); cad = CadDevice.getCadClientInstance(CadDevice.PROTOCOL_T0, is, os); } catch (Exception e) { System.out.println("error"); return; } try { cad.powerUp(); } catch (IOException e) { e.printStackTrace(); } catch (CadTransportException e) { System.out.println("error"); try { sckClient.close(); } catch (IOException e1) { e1.printStackTrace(); } return; } 

My code is stuck in powerUp without any errors or exceptions. I use sample_device and sample_platform that come with Java Card Development Kit 3.0.5u1