swing - java help, Total and Enter buttons in the class are not working, I tried to review the action listener for both buttons -

/** java class works sales simulator, have difficulty working total , enter buttons, problem total , enter buttons, cannot figure why these buttons not working!! */

// import applications java library

        import java.awt.*;         import java.awt.event.*;         import javax.swing.*;         import java.text.*;       // starting cashregister class     public class cashregister extends jframe     {     //initiate  value          double subtotal = 0.0; // stores subtotal of items purchased         // jlabel , jtextfield enter amount         private jlabel amountjlabel;        private jtextfield amountjtextfield;          // jbuttons enter numbers in amountjtextfield          private jbutton onejbutton;        private jbutton twojbutton;        private jbutton threejbutton;        private jbutton fourjbutton;        private jbutton fivejbutton;        private jbutton sixjbutton;        private jbutton sevenjbutton;        private jbutton eightjbutton;        private jbutton ninejbutton;        private jbutton zerojbutton;        private jbutton pointjbutton;         // jbutton add value in amountjtextfield subtotal          private jbutton enterjbutton;          // jbutton determine tax , calculate final total          private jbutton totaljbutton;         // jbutton delete value displayed in amountjtextfield          private jbutton deletejbutton;         // jbutton clear results          private jbutton clearjbutton;         // jlabel , jtextfield display subtotal          private jlabel subtotaljlabel;          private jtextfield subtotaljtextfield;         // jlabel , jtextfield display tax          private jlabel taxjlabel;        private jtextfield taxjtextfield;         // jlabel , jtextfield display final total          private jlabel totaljlabel;        private jtextfield totaljtextfield;         // decimalformat format dollar amounts          private decimalformat dollars = new decimalformat( "$0.00" );          // no-argument constructor        public cashregister()        {           createuserinterface();        }         // create , position gui components; register event handlers          private void createuserinterface()        {           // content pane attaching gui components             container contentpane = getcontentpane();            // enable explicit positioning of gui components            contentpane.setlayout( null );            // set amountjlabel             amountjlabel = new jlabel();           amountjlabel.setbounds( 20, 20, 15, 20 );           amountjlabel.settext( "$" );           contentpane.add( amountjlabel );            // set amountjtextfield             amountjtextfield = new jtextfield();           amountjtextfield.setbounds( 40, 20, 260, 20 );           contentpane.add( amountjtextfield );            // set onejbutton             onejbutton = new jbutton();           onejbutton.setbounds( 55, 70, 45, 20 );           onejbutton.settext( "1" );           contentpane.add( onejbutton );           onejbutton.addactionlistener(               new actionlistener() // anonymous inner class              {                 // event handler called when onejbutton pressed                   public void actionperformed( actionevent event )                 {                    onejbuttonactionperformed( event );                 }               }            // end anonymous inner class            );             // end call addactionlistener            // set twojbutton             twojbutton = new jbutton();           twojbutton.setbounds( 100, 70, 45, 20 );           twojbutton.settext( "2" );           contentpane.add( twojbutton );           twojbutton.addactionlistener(               new actionlistener() // anonymous inner class              {                 // event handler called when twojbutton pressed              public void actionperformed( actionevent event )                 {                    twojbuttonactionperformed( event );                 }               }             // end anonymous inner class            );       // end call addactionlistener            // set threejbutton             threejbutton = new jbutton();           threejbutton.setbounds( 145, 70, 45, 20 );           threejbutton.settext( "3" );           contentpane.add( threejbutton );           threejbutton.addactionlistener(               new actionlistener() // anonymous inner class              {                 // event handler called when threejbutton pressed                     public void actionperformed( actionevent event )                 {                    threejbuttonactionperformed( event );                 }               }       // end anonymous inner class            );       // end call addactionlistener            // set fourjbutton          fourjbutton = new jbutton();           fourjbutton.setbounds( 55, 90, 45, 20 );           fourjbutton.settext( "4" );           contentpane.add( fourjbutton );           fourjbutton.addactionlistener(               new actionlistener() // anonymous inner class              {                 // event handler called when fourjbutton pressed       public void actionperformed( actionevent event )                 {                    fourjbuttonactionperformed( event );                 }               }       // end anonymous inner class            );       // end call addactionlistener            // set fivejbutton       fivejbutton = new jbutton();           fivejbutton.setbounds( 100, 90, 45, 20 );           fivejbutton.settext( "5" );           contentpane.add( fivejbutton );           fivejbutton.addactionlistener(               new actionlistener() // anonymous inner class              {                 // event handler called when fivejbutton pressed                public void actionperformed( actionevent event )                 {                    fivejbuttonactionperformed( event );                 }               }       // end anonymous inner class            );       // end call addactionlistener            // set sixjbutton       sixjbutton = new jbutton();           sixjbutton.setbounds( 145, 90, 45, 20 );           sixjbutton.settext( "6" );           contentpane.add( sixjbutton );           sixjbutton.addactionlistener(               new actionlistener() // anonymous inner class              {                 // event handler called when sixjbutton pressed       public void actionperformed( actionevent event )                 {                    sixjbuttonactionperformed( event );                 }               }       // end anonymous inner class            );       // end call addactionlistener            // set sevenjbutton          sevenjbutton = new jbutton();           sevenjbutton.setbounds( 55, 110, 45, 20 );           sevenjbutton.settext( "7" );           contentpane.add( sevenjbutton );           sevenjbutton.addactionlistener(               new actionlistener() // anonymous inner class              {                 // event handler called when sevenjbutton pressed           public void actionperformed( actionevent event )                 {                    sevenjbuttonactionperformed( event );                 }               }       // end anonymous inner class            );       // end call addactionlistener            // set eightjbutton          eightjbutton = new jbutton();           eightjbutton.setbounds( 100, 110, 45, 20 );           eightjbutton.settext( "8" );           contentpane.add( eightjbutton );           eightjbutton.addactionlistener(               new actionlistener() // anonymous inner class              {                 // event handler called when eightjbutton pressed                 public void actionperformed( actionevent event )                 {                    eightjbuttonactionperformed( event );                 }               } // end anonymous inner class            );                  // end call addactionlistener                    // set ninejbutton       ninejbutton = new jbutton();           ninejbutton.setbounds( 145, 110, 45, 20 );           ninejbutton.settext( "9" );           contentpane.add( ninejbutton );           ninejbutton.addactionlistener(               new actionlistener() // anonymous inner class              {                 // event handler called when ninejbutton pressed       public void actionperformed( actionevent event )                 {                    ninejbuttonactionperformed( event );                 }               }       // end anonymous inner class            ); // end call addactionlistener            // set zerojbutton           zerojbutton = new jbutton();           zerojbutton.setbounds( 100, 130, 45, 20 );           zerojbutton.settext( "0" );           contentpane.add( zerojbutton );           zerojbutton.addactionlistener(               new actionlistener() // anonymous inner class              {                 // event handler called when zerojbutton pressed                 public void actionperformed( actionevent event )                 {                    zerojbuttonactionperformed( event );                 }               }                 // end anonymous inner class            );               // end call addactionlistener            // set pointjbutton        pointjbutton = new jbutton();           pointjbutton.setbounds( 145, 130, 45, 20 );           pointjbutton.settext( "." );           contentpane.add( pointjbutton );           pointjbutton.addactionlistener(               new actionlistener() // anonymous inner class              {                 // event handler called when pointjbutton pressed                 public void actionperformed( actionevent event )                 {                    pointjbuttonactionperformed( event );                 }               }       // end anonymous inner class            );       // end call addactionlistener            // set enterjbutton         enterjbutton = new jbutton();           enterjbutton.setbounds( 205, 70, 70, 20 );           enterjbutton.settext( "enter" );           contentpane.add( enterjbutton );           enterjbutton.addactionlistener(               new actionlistener() // anonymous inner class              {                 // event handler called when enterjbutton pressed                 public void actionperformed( actionevent event )                 {                    enterjbuttonactionperformed( event );                 }               } // end anonymous inner class            );       // end call addactionlistener            // set totaljbutton        totaljbutton = new jbutton();           totaljbutton.setbounds( 205, 90, 70, 20 );           totaljbutton.settext( "total" );           contentpane.add( totaljbutton );           totaljbutton.addactionlistener(               new actionlistener() // anonymous inner class              {                 // event handler called when totaljbutton pressed        public void actionperformed( actionevent event )                 {                    totaljbuttonactionperformed( event );                 }               }       // end anonymous inner class            );       // end call addactionlistener            // set deletejbutton       deletejbutton = new jbutton();           deletejbutton.setbounds( 205, 110, 70, 20 );           deletejbutton.settext( "delete" );           contentpane.add( deletejbutton );           deletejbutton.addactionlistener(               new actionlistener() // anonymous inner class              {                 // event handler called when deletejbutton pressed        public void actionperformed( actionevent event )                 {                    deletejbuttonactionperformed( event );                 }               }       // end anonymous inner class            );       // end call addactionlistener            // set clearjbutton       clearjbutton = new jbutton();           clearjbutton.setbounds( 205, 130, 70, 20 );           clearjbutton.settext( "clear" );           contentpane.add( clearjbutton );           clearjbutton.addactionlistener(               new actionlistener() // anonymous inner class              {                 // event handler called when clearjbutton pressed        public void actionperformed( actionevent event )                 {                    clearjbuttonactionperformed( event );                 }               }       // end anonymous inner class            );       // end call addactionlistener            // set subtotaljlabel;         subtotaljlabel = new jlabel();           subtotaljlabel.setbounds( 20, 180, 90, 20 );           subtotaljlabel.settext( "subtotal:" );           contentpane.add( subtotaljlabel );            // set subtotaljtextfield       subtotaljtextfield = new jtextfield();           subtotaljtextfield.setbounds( 160, 180, 140, 20 );           subtotaljtextfield.sethorizontalalignment( jtextfield.right );           subtotaljtextfield.seteditable( false );           subtotaljtextfield.settext( "$0.00" );           contentpane.add( subtotaljtextfield );            // set taxjlabel           taxjlabel = new jlabel();           taxjlabel.setbounds( 20, 220, 60, 20 );           taxjlabel.settext( "tax:" );           contentpane.add( taxjlabel );            // set taxjtextfield         taxjtextfield = new jtextfield();           taxjtextfield.setbounds( 160, 220, 140, 20 );           taxjtextfield.sethorizontalalignment( jtextfield.right );           taxjtextfield.seteditable( false );           taxjtextfield.settext( "$0.00" );           contentpane.add( taxjtextfield );            // set totaljlabel       totaljlabel = new jlabel();           totaljlabel.setbounds( 20, 260, 70, 20 );           totaljlabel.settext( "total:" );           contentpane.add( totaljlabel );            // set totaljtextfield         totaljtextfield = new jtextfield();           totaljtextfield.setbounds( 160, 260, 140, 20 );           totaljtextfield.sethorizontalalignment( jtextfield.right );           totaljtextfield.seteditable( false );           totaljtextfield.settext( "$0.00" );           contentpane.add( totaljtextfield );            // set properties of application's window         settitle( "cash register" ); // set window title           setsize( 345, 330 );         // set window size           setvisible( true );          // display window         }       // end method createuserinterface         // append "0" amount in amountjtextfield       private void zerojbuttonactionperformed( actionevent event )        {           amountjtextfield.settext( amountjtextfield.gettext() + "0" );         }       // end method zerojbuttonactionperformed         // append "1" amount in amountjtextfield        private void onejbuttonactionperformed( actionevent event )        {           amountjtextfield.settext( amountjtextfield.gettext() + "1" );         }        // end method onejbuttonactionperformed       // append "2" amount in amountjtextfield         private void twojbuttonactionperformed( actionevent event )        {           amountjtextfield.settext( amountjtextfield.gettext() + "2" );         } // end method twojbuttonactionperformed         // append "3" amount in amountjtextfield        private void threejbuttonactionperformed( actionevent event )        {           amountjtextfield.settext( amountjtextfield.gettext() + "3" );         }       // end method threejbuttonactionperformed         // append "4" amount in amountjtextfield        private void fourjbuttonactionperformed( actionevent event )        {           amountjtextfield.settext( amountjtextfield.gettext() + "4" );         }       // end method fourjbuttonactionperformed         // append "5" amount in amountjtextfield       private void fivejbuttonactionperformed( actionevent event )        {           amountjtextfield.settext( amountjtextfield.gettext() + "5" );         } // end method fivejbuttonactionperformed         // append "6" amount in amountjtextfield        private void sixjbuttonactionperformed( actionevent event )        {           amountjtextfield.settext( amountjtextfield.gettext() + "6" );         }       // end method sixjbuttonactionperformed         // append "7" amount in amountjtextfield         private void sevenjbuttonactionperformed( actionevent event )        {           amountjtextfield.settext( amountjtextfield.gettext() + "7" );         } // end method sevenjbuttonactionperformed         // append "8" amount in amountjtextfield        private void eightjbuttonactionperformed( actionevent event )        {           amountjtextfield.settext( amountjtextfield.gettext() + "8" );         } // end method eightjbuttonactionperformed         // append "9" amount in amountjtextfield        private void ninejbuttonactionperformed( actionevent event )        {           amountjtextfield.settext( amountjtextfield.gettext() + "9" );         }       // end method ninejbuttonactionperformed         // append "." amount in amountjtextfield       private void pointjbuttonactionperformed( actionevent event )        {           amountjtextfield.settext( amountjtextfield.gettext() + "." );         } // end method pointjbuttonactionperformed     // calculate , display subtotal     private void enterjbuttonactionperformed( actionevent event )    {     }      // end method enterjbuttonactionperformed     // calculate , display total after taxes    private void totaljbuttonactionperformed( actionevent event )    {     }   // end method totaljbuttonactionperformed     // clear current amount displayed in amountjtextfield    private void deletejbuttonactionperformed( actionevent event )    {       amountjtextfield.settext( "" );     }        // end method deletejbuttonactionperformed     // clear results    private void clearjbuttonactionperformed( actionevent event )    {       amountjtextfield.settext( "" );       subtotaljtextfield.settext( "$0.00" );       taxjtextfield.settext( "$0.00" );       totaljtextfield.settext( "$0.00" );       subtotal = 0.0; // reset subtotal 0.0     }       // end method clearjbuttonactionperformed     // main method    public static void main( string[] args )    {       cashregister application = new cashregister();       application.setdefaultcloseoperation( jframe.exit_on_close );     }        // end method main       }/** end of program*/ 

i think simple way show actionlistener. if understand basics of this, you'll able fix own code :)

package actionlistenerexample;  import java.awt.event.actionevent; import java.awt.event.actionlistener; import javax.swing.jbutton; import javax.swing.jframe; import javax.swing.jpanel;  public class actionlistenerexample extends jframe implements actionlistener{  jpanel panel = new jpanel(); jbutton button1; jbutton button2;  public actionlistenerexample(){    setvisible(true);     setdefaultcloseoperation(jframe.exit_on_close);    add(panel);     button1 = new jbutton("button1");    button1.addactionlistener(this);    button2 = new jbutton("button2");    button2.addactionlistener(this);     panel.add(button1);    panel.add(button2);    pack(); }  public static void main(string[] args) {    jframe jf = new actionlistenerexample(); }  @override public void actionperformed(actionevent event){     if(event.getsource() == button1){         system.out.println("button1 clicked");     }     if(event.getsource() == button2){         system.out.println("button2 clicked");     } } }