java - Problems with Changing JTextArea font size -

i trying prompt user input joptionpane change font size of jtextarea, shown below as, "console".

issue:

however, joptionpane not showing when click on size jmenu item.

code:

font font = new font("arial", font.plain, 12);  panel = new jpanel(); panel.setlayout(new borderlayout()); add(panel, borderlayout.center);  jtextarea console = new jtextarea(); console.setlinewrap(true); console.setwrapstyleword(true); console.seteditable(false); console.setfont(font);  jscrollpane scroll = new jscrollpane(console); scroll.setverticalscrollbarpolicy(scrollpaneconstants.vertical_scrollbar_always); panel.add(scroll, borderlayout.center);  jmenubar bar = new jmenubar(); panel.add(bar, borderlayout.north);  jmenu size = new jmenu("size"); size.addactionlistener(new actionlistener() {     @override public void actionperformed(actionevent e) {         string fontsize = joptionpane.showinputdialog(panel, "new font size, 6 or larger:", "set font size", joptionpane.ok_cancel_option);         font newfont = font.derivefont(integer.parseint(fontsize));         console.setfont(newfont);     } });  bar.add(size); 

this seems bug use ´menulistener´ described in answer @tpete

here code provided in answer work around issue:

jmenu menu = new jmenu("mymenu"); menu.addmenulistener(new menulistener() {      @override     public void menuselected(menuevent e) {         system.out.println("menuselected");     }      @override     public void menudeselected(menuevent e) {         system.out.println("menudeselected");     }      @override     public void menucanceled(menuevent e) {         system.out.println("menucanceled");     } }); 

basically he's using menulistener instead of actionlistener catch event successfully.

hope helps!