java - JFileChooser Thread & JLabel -

i'm creating parser that's why use jfilechooser. when select file jfilechooser, have jlabel says : "parsing in progress" or smth that. , when it's done : "parsing done".

(my first aim use progress bars, it's bit complicated me now)

the readfile class take array of files , create callable each file. if 5 files : 5 threads called. used callable because need strings of data each threads , write in same csv file.

well, when click on cancel on jfilechooser, jlabel displays correctly @ right moment when select files / file parsing function, jlabel waits entire execution of callables , "processing" appears (but when has ended ^^).

i cannot manage display processing @ beginning of threads.

note : called cardlayout @ moment, not used yet.

here code :

public class main {     private static final string card_main =  "card main";     private static final string card_file = "card file";          public static void main(string[] args) throws ioexception {         creategui();                 }      public static void creategui(){           // jframe          final jframe window = new jframe();             window.setdefaultcloseoperation(jframe.exit_on_close);             window.setlocationrelativeto(null);             window.settitle("tmg parser - thales");             window.setsize(400, 100);                // buttonpanel ( 1 open jfilechooser & 1 quit )             jpanel container = new jpanel();             jpanel buttonpanel = new jpanel();               final jbutton filebutton = new jbutton("choose file");             filebutton.setbackground(color.black);             filebutton.setforeground(color.white);              final jbutton quitbutton = new jbutton("quit");             quitbutton.setbackground(color.red);             quitbutton.setforeground(color.white);              // adding buttons panel             buttonpanel.add(filebutton);             buttonpanel.add(quitbutton);              // status label says : processing or done             final jlabel status = new jlabel();             container.add(status);             filebutton.addactionlistener(new actionlistener()             {                 public void actionperformed(actionevent ae)                 {                      jfilechooser dialogue = new jfilechooser(new file("."));                     dialogue.setmultiselectionenabled(true) ;                     if (dialogue.showopendialog(null)==                          jfilechooser.approve_option) {                              status.settext("processing");                            file[] fichiers=dialogue.getselectedfiles();                         for( int = 1; i<fichiers.length; ++i){                               fichiers[i].getname();                               fichiers[i].getabsolutepath();                            }                           // calling execution function (threads)                         readfile readprogram = new readfile(fichiers);                       }                     else{status.settext("action cancelled");}                 }             });              quitbutton.addactionlistener(new actionlistener()             {                 public void actionperformed(actionevent ae)                 {                     system.exit(0);                 }             });             window.add(container, borderlayout.center);             window.add(buttonpanel, borderlayout.page_end);               window.setvisible(true);         }  } 

ok @tobias_k right ! thank man.

when launched readfile, freezing swing thread until readfile done.

i changed readfile thread (and calling callables), , works perfectly. !