java - ActionPerformed does not work -

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have little problem code. actionperformed method doesn't work. buttons knappstartsalg , knappstartkunde, don't react when push buttons.

all should have been imported imported.

will thankful help.

startmeny class.

public class startmeny extends jframe implements actionlistener {      public jbutton knappstartsalg, knappstartkunde, knappstartinfo, knappstartstatistikk;      public jpanel startmeny()     {     jpanel startpanel = new jpanel();     startpanel.setlayout(new gridlayout(2, 0, 25, 25) );     startpanel.setcomponentorientation(componentorientation.left_to_right);     startpanel.setbackground(color.white);      jbutton knappstartsalg = new jbutton();     knappstartsalg.settext("salg");     knappstartsalg.setverticaltextposition(jbutton.bottom);     knappstartsalg.sethorizontaltextposition(jbutton.center);     knappstartsalg.seticon(new javax.swing.imageicon(getclass().getresource("salg.png")));     knappstartsalg.seticontextgap(6);     knappstartsalg.setforeground(color.black);     knappstartsalg.setbackground(color.white);     knappstartsalg.setborderpainted(false);     knappstartsalg.addactionlistener(this);      startpanel.add(knappstartsalg);      jbutton knappstartkunde = new jbutton();     knappstartkunde.settext("kontroll");     knappstartkunde.setverticaltextposition(jbutton.bottom);     knappstartkunde.sethorizontaltextposition(jbutton.center);     knappstartkunde.seticon(new javax.swing.imageicon(getclass().getresource("heiskontroll.png")));     knappstartkunde.seticontextgap(6);     knappstartkunde.setforeground(color.black);     knappstartkunde.setbackground(color.white);     knappstartkunde.setborderpainted(false);     knappstartkunde.addactionlistener(this);      startpanel.add(knappstartkunde);      jbutton knappstartinfo = new jbutton();     knappstartinfo.settext("informasjonsvindu");     knappstartinfo.setverticaltextposition(jbutton.bottom);     knappstartinfo.sethorizontaltextposition(jbutton.center);     knappstartinfo.seticon(new javax.swing.imageicon(getclass().getresource("info.png")));     knappstartinfo.seticontextgap(6);     knappstartinfo.setforeground(color.black);     knappstartinfo.setbackground(color.white);     knappstartinfo.setborderpainted(false);     knappstartinfo.addactionlistener(this);      startpanel.add(knappstartinfo);      jbutton knappstartstatistikk = new jbutton();     knappstartstatistikk.settext("statistikk");     knappstartstatistikk.setverticaltextposition(jbutton.bottom);     knappstartstatistikk.sethorizontaltextposition(jbutton.center);     knappstartstatistikk.seticon(new javax.swing.imageicon(getclass().getresource("statistikk.png")));     knappstartstatistikk.seticontextgap(6);     knappstartstatistikk.setforeground(color.black);     knappstartstatistikk.setbackground(color.white);     knappstartstatistikk.setborderpainted(false);     knappstartstatistikk.addactionlistener(this);      startpanel.add(knappstartstatistikk );      return startpanel; }   @override public void actionperformed(actionevent e) {     salgsvindu s = new salgsvindu();      if(e.getsource() == knappstartsalg)     {         s.vissalgvindunybruker();         system.out.println("hallotest");     }     else if(e.getsource() == knappstartkunde)         s.viskontrollvindu(); } }

main-class, runs gui.

public class skisenter { public static void main(string[] args)  {        /*salgsvindu s = new salgsvindu();     s.vissalgvindunybruker();*/     startmeny startmenyinstanse = new startmeny();      startmenyinstanse.setsize(600, 630);     startmenyinstanse.settitle("startmeny skisenter");     startmeny st = new startmeny();     startmenyinstanse.setcontentpane(st.startmeny());     startmenyinstanse.setvisible(true);     startmenyinstanse.setdefaultcloseoperation(jframe.exit_on_close); } }

in class, define instance variables:

public jbutton knappstartsalg, knappstartkunde, knappstartinfo, knappstartstatistikk;

you use these variables in action listener implementation. in constructor, construct jbuttons , assign them new local variables, not instance variables declare above constructor. instead of:

jbutton knappstartsalg = new jbutton();

write

knappstartsalg = new jbutton();

to assign buttons instance variables , action listener should work.


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