Gui Blocked after selected a Jcheckbox

[simplo]

Hi guys ,
i wrote a progamm to print msesage while the Jchekbox is selected , but the problem is : my gui completely blocked when i check my box (also my jCheckBox is no more selectable). can someone tell me how to resolve the problem ? . here is my code : The red marked code block the gui ( i think)

private void jCheckBox1ItemStateChanged(java.awt.event.ItemEven t evt) {

boolean state = jCheckBox1.isSelected();
if(state ){
try {
send("start tick");
} catch (IOException ex) {
Logger.getLogger(DiagClient.class.getName()).log(L evel.SEVERE, null, ex);
}
try {
do{
socket.receive(buffer);

recvMsg = new String (inData ,0 ,buffer.getLength());
System.out.println(recvMsg);
}
while(buffer.getLength() !=0);
} catch (IOException ex) {
Logger.getLogger(DiagClient.class.getName()).log(L evel.SEVERE, null, ex);
}


}

[Fubarable]

You're blocking the EDT, the main thread used by Swing to do user interaction and painting. Best to do your long-running process in a background thread such as a SwingWorker. Check out the Sun/Oracle tutorial on this for more information: Concurrency in Swing

[simplo]

thanks , i solve the problem using SwingWorker , now i have the same Problem with Applets:
when i run my applet in Netbeans all is ok the button doens´t block, but when i insert this applet in a Browser , the checkbutton block .
any idea ?