java - JText .getText() returns nothing? -

i'm, trying small app , need take data jtextfield when press button. problem when press button, nothing happens.. tested println("yes") , its working printing "yes' onactionlistener`. should ?

here part of code:

label = new label("width:"); label.setmaximumsize(new dimension(40, 25)); this.add(label);  textfield = new textfield(); textfield.setpreferredsize(new dimension(80, 25)); textfield.setmaximumsize(new dimension(80, 25)); this.add(textfield);  button = new jbutton("submit"); button.addactionlistener(new actionlistener() {      @override     public void actionperformed(actionevent e) {          system.out.println(textfield.gettext()); // <- here textfield.gettext() not return anything.     } }); this.add(button); 

i don't know components using, think have problem components declaration, should :

textfield = new jtextfield(); label = new jlabel("width:"); 

and not :

textfield = new textfield(); label = new label("width:");        jtextfield() , not textfield() //----^--------------------^---------------