java - Why do JButtons that open webpages only work the first time one is clicked and then get deactivated? -


i have set of jbuttons, each of opens separate youtube video webpage. when first running program, can click on 1 button , video page. when try video page button click, doesn't work - in fact, buttons deactivated. case whether or not close video webpage.

how can keep buttons activated? in advance.

here's code reference. button links , tags populated text file.

//import statements  public class videorecord extends jframe {  private file videorecordfile;  public videorecord() throws filenotfoundexception {     setvisible(true);     setdefaultcloseoperation(exit_on_close);     setlayout(new gridlayout(2,2));     setsize(new dimension(500, 500));     videorecordfile = new file("videorecord.txt");           getbuttons();     pack(); }  public void getbuttons() throws filenotfoundexception {     scanner input = new scanner(videorecordfile);     while (input.hasnextline()) {         scanner lineinput = new scanner(input.nextline());         while (lineinput.hasnext()) {                            final string urlstring = lineinput.next();             string buttontext = lineinput.next();             jbutton btn = new jbutton(buttontext);             add(btn);             btn.addactionlistener(new actionlistener() {                 public void actionperformed(actionevent e) {                                         try {                         url videourl = new url(urlstring);                         urlconnection videoconnection = videourl.openconnection();                         videoconnection.connect();                         openwebpage(videourl);                     }                      catch (malformedurlexception mue) {}                      catch (ioexception ioe) {}                     setenabled(false);                 }             });         }     } }  public static void openwebpage(uri uri) {     desktop desktop = desktop.isdesktopsupported() ? desktop.getdesktop() : null;     if (desktop != null && desktop.issupported(desktop.action.browse)) {         try {             desktop.browse(uri);         } catch (exception e) {             e.printstacktrace();         }     } }  public static void openwebpage(url url) {     try {         openwebpage(url.touri());     } catch (urisyntaxexception e) {         e.printstacktrace();     } }  public static void main(string[] args) throws filenotfoundexception {     videorecord vr = new videorecord(); }

}

take second @ code... 

btn.addactionlistener(new actionlistener() {             public void actionperformed(actionevent e) {                                     try {                     url videourl = new url(urlstring);                     urlconnection videoconnection = videourl.openconnection();                     videoconnection.connect();                     openwebpage(videourl);                 }                  catch (malformedurlexception mue) {}                  catch (ioexception ioe) {}                 setenabled(false);             }         });

when click button call setenabled(false);...

this has disable frame, not button clicked...

  1. try using ((jbutton)e.getsource()).setenabled(false) instead
  2. don't throw away exceptions blindly, provide important , useful information can solve problems

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