java - Updating variables inside labels -

 import java.awt.*;  import java.awt.event.*;  import javax.swing.*;   public class testswinglisteners1 {      private static int cnt1;     private static int cnt2;     public static void main(string[] args) {     jframe fr1 = new jframe("swing window");     container cp;     jbutton bt1;     jbutton bt2;     cnt1 = 0;     cnt2 = 0;     string scr = null;     string wnr = null;     jbutton btok, btcancel;     fr1.setdefaultcloseoperation(jframe.exit_on_close);     fr1.setsize(300, 200);     fr1.setresizable(false);     cp = fr1.getcontentpane();     cp.setlayout(new gridlayout(5,1));     btok = new jbutton("ac milan");     btcancel = new jbutton("real madrid");     jlabel lbl1 = new jlabel("result: " + cnt1 + "x" + cnt2);     jlabel lbl2 = new jlabel("last scorer: " + scr);     jlabel lbl3 = new jlabel("winner: " + wnr);     cp.add(btok);     cp.add(btcancel);     cp.add(lbl1);     cp.add(lbl2);     cp.add(lbl3);     //lbl1.settext(displaytext);      btok.addactionlistener(new actionlistener(){         public void actionperformed(actionevent ae) {         //string displaytext = "" + 1;         cnt1++;              }     });      btcancel.addactionlistener(new actionlistener(){         public void actionperformed(actionevent ae) {         cnt2++;         }     });     fr1.show();  } 

when press btok button, want cnt1 increment , same btcancel - increment cnt2 when it's pressed.

how it?

public class testswinglisteners1 implements actionlistener {      // ...      btok = new jbutton("ac milan");     btok.setactioncommand("ok");     btokaddactionlistener(this);      btcancel = new jbutton("real madrid");     btcancel.setactioncommand("cancel");     btcancel.addactionlistener(this);      // ...      public void actionperformed(actionevent e)     {         if(e.getactioncommand().equals("ok"))         {             lbl1.settext("result: " + ++cnt1 + "x" + cnt2);         }         else if(e.getactioncommand().equals("cancel"))         {             lbl1.settext("result: " + cnt1 + "x" + ++cnt2);         }     } }