java - Debug takes four minutes to run -

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i developed swing application communicate through serial port. using rxtx library serial port communication, hangs 5 minutes when debug application @ point.

public void connect(string portname) throws exception { commportidentifier portidentifier = commportidentifier.getportidentifier(portname); if (portidentifier.iscurrentlyowned()) {  system.out.println("port in use!"); } else {  serialport serialport = (serialport) portidentifier.open("rs232example", 2000);    serialport.setserialportparams(57600, serialport.databits_8, serialport.stopbits_1,          serialport.parity_none);    new commportsender(serialport.getoutputstream());    new commportreceiver(serialport.getinputstream());  } }


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