java - How do you reference a button inside of its actionlistener? -

i'm starting used listeners still kind of new working them. need reference button inside of actionlistener text of button. code want is:

for(int = 0; i<48; ++i){         button[i] = new jbutton("");         contentpane.add(button[i]);         button[i].addactionlistener(new actionlistener() {             public void actionperformed(actionevent e) {                 x_marks_the_spot();                 if(button[i].gettext().equals("x")){                     increase_hit();                 }                 else{                     increase_miss();                 }             }         }); 

obviously can't because [i] doesn't exist in anon portion of code. sure there way getting source, can't think of it.

obviously can't because [i] doesn't exist in anon portion of code.

you copying i final variable:

// make final copy of loop variable before making listener final tmpi = i; ... // use final variable instead of `i` inside listener if(button[tmpi].gettext().equals("x")){ 

however, not efficient way of doing it, because each button need own listener object, reference tmpi stored inside code.

you can create single actionlistener object, , share among buttons, this:

actionlistener listener = new actionlistener() {     public void actionperformed(actionevent e) {         x_marks_the_spot();         jbutton sender = (jbutton)e.getsource();         if(sender.gettext().equals("x")){             increase_hit();         } else{             increase_miss();         }     } }; for(int = 0; i<48; ++i){     button[i] = new jbutton("");     contentpane.add(button[i]);     button[i].addactionlistener(listener); }