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Thread: Getting a calculate button to work, and clear button to reset everything.

  1. #1
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    Default Getting a calculate button to work, and clear button to reset everything.

    I'm creating a Pizza Ordering GUI, and I am confused on how & where to add an Action Listener for the calculate button to recognize the jradio button
    and jcheckboxes. Can anyone help me?


    import java.text.NumberFormat;
    import java.util.Locale;
    import java.awt.event.ActionEvent;   ///might not need
     
     
    public class PizzaGUI extends javax.swing.JFrame {
     
     
        /**
         * Creates new form PizzaGUI
         */
        public PizzaGUI() {
            initComponents();
     
     
        }
     
        /**
         * This method is called from within the constructor to initialize the form.
         * WARNING: Do NOT modify this code. The content of this method is always
         * regenerated by the Form Editor.
         */
        @SuppressWarnings("unchecked")
        // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
        private void initComponents() {
     
            buttonGroup1 = new javax.swing.ButtonGroup();
            jLabel1 = new javax.swing.JLabel();
            CalculateButton = new javax.swing.JButton();
            ClearButton = new javax.swing.JButton();
            jLabel4 = new javax.swing.JLabel();
            TotalPrice = new javax.swing.JTextField();
            jPanel1 = new javax.swing.JPanel();
            smallRadio = new javax.swing.JRadioButton();
            medRadio = new javax.swing.JRadioButton();
            largeRadio = new javax.swing.JRadioButton();
            jPanel2 = new javax.swing.JPanel();
            SausageTopping = new javax.swing.JCheckBox();
            PepperoniTopping = new javax.swing.JCheckBox();
            SalamiTopping = new javax.swing.JCheckBox();
            OlivesTopping = new javax.swing.JCheckBox();
            MushroomsTopping = new javax.swing.JCheckBox();
            AnchoviesTopping = new javax.swing.JCheckBox();
     
            setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
            setTitle("Giovanni's Pizza");
     
            jLabel1.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N
            jLabel1.setText("Giovanni's Online Pizza Order");
     
            CalculateButton.setText("Calculate");
            CalculateButton.addActionListener(new java.awt.event.ActionListener() {
                public void actionPerformed(java.awt.event.ActionEvent evt) {
                    CalculateButtonActionPerformed(evt);
                }
            });
     
            ClearButton.setText("Clear");
            ClearButton.addActionListener(new java.awt.event.ActionListener() {
                public void actionPerformed(java.awt.event.ActionEvent evt) {
                    ClearButtonActionPerformed(evt);
                }
            });
     
            jLabel4.setText("Price:");
     
            jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder("Size"));
            jPanel1.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N
     
            buttonGroup1.add(smallRadio);
            smallRadio.setText("Small");
            smallRadio.addActionListener(new java.awt.event.ActionListener() {
                public void actionPerformed(java.awt.event.ActionEvent evt) {
                    smallRadioActionPerformed(evt);
                }
            });
     
            buttonGroup1.add(medRadio);
            medRadio.setText("Medium");
     
            buttonGroup1.add(largeRadio);
            largeRadio.setText("Large");
     
            javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
            jPanel1.setLayout(jPanel1Layout);
            jPanel1Layout.setHorizontalGroup(
                jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(jPanel1Layout.createSequentialGroup()
                    .addGap(18, 18, 18)
                    .addComponent(smallRadio)
                    .addGap(26, 26, 26)
                    .addComponent(medRadio)
                    .addGap(18, 18, 18)
                    .addComponent(largeRadio)
                    .addContainerGap(35, Short.MAX_VALUE))
            );
            jPanel1Layout.setVerticalGroup(
                jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
                    .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                        .addComponent(smallRadio)
                        .addComponent(medRadio)
                        .addComponent(largeRadio))
                    .addGap(72, 72, 72))
            );
     
            jPanel2.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Toppings", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, null, new java.awt.Color(0, 0, 0)));
            jPanel2.setFont(new java.awt.Font("Tahoma", 1, 13)); // NOI18N
     
            SausageTopping.setText("Sausage");
            SausageTopping.addActionListener(new java.awt.event.ActionListener() {
                public void actionPerformed(java.awt.event.ActionEvent evt) {
                    SausageToppingActionPerformed(evt);
                }
            });
     
            PepperoniTopping.setText("Pepperoni");
     
            SalamiTopping.setText("Salami");
     
            OlivesTopping.setText("Olives");
     
            MushroomsTopping.setText("Mushrooms");
     
            AnchoviesTopping.setText("Anchovies");
     
            javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
            jPanel2.setLayout(jPanel2Layout);
            jPanel2Layout.setHorizontalGroup(
                jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(jPanel2Layout.createSequentialGroup()
                    .addContainerGap()
                    .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                        .addComponent(SausageTopping)
                        .addComponent(PepperoniTopping)
                        .addComponent(SalamiTopping))
                    .addGap(29, 29, 29)
                    .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                        .addComponent(AnchoviesTopping)
                        .addComponent(MushroomsTopping)
                        .addComponent(OlivesTopping))
                    .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
            );
            jPanel2Layout.setVerticalGroup(
                jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(jPanel2Layout.createSequentialGroup()
                    .addGap(25, 25, 25)
                    .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                        .addComponent(SausageTopping)
                        .addComponent(OlivesTopping))
                    .addGap(18, 18, 18)
                    .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                        .addComponent(PepperoniTopping)
                        .addComponent(MushroomsTopping))
                    .addGap(18, 18, 18)
                    .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                        .addComponent(SalamiTopping)
                        .addComponent(AnchoviesTopping))
                    .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
            );
     
            javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
            getContentPane().setLayout(layout);
            layout.setHorizontalGroup(
                layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(layout.createSequentialGroup()
                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                        .addGroup(layout.createSequentialGroup()
                            .addGap(64, 64, 64)
                            .addComponent(jLabel1))
                        .addGroup(layout.createSequentialGroup()
                            .addGap(20, 20, 20)
                            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                                .addComponent(ClearButton, javax.swing.GroupLayout.PREFERRED_SIZE, 110, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                .addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                .addGroup(layout.createSequentialGroup()
                                    .addComponent(CalculateButton, javax.swing.GroupLayout.PREFERRED_SIZE, 110, javax.swing.GroupLayout.PREFERRED_SIZE)
                                    .addGap(18, 18, 18)
                                    .addComponent(jLabel4, javax.swing.GroupLayout.PREFERRED_SIZE, 41, javax.swing.GroupLayout.PREFERRED_SIZE)
                                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                    .addComponent(TotalPrice, javax.swing.GroupLayout.PREFERRED_SIZE, 43, javax.swing.GroupLayout.PREFERRED_SIZE)))))
                    .addContainerGap(21, Short.MAX_VALUE))
            );
            layout.setVerticalGroup(
                layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(layout.createSequentialGroup()
                    .addGap(28, 28, 28)
                    .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 24, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGap(18, 18, 18)
                    .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, 92, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGap(30, 30, 30)
                    .addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGap(18, 18, 18)
                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                        .addComponent(CalculateButton, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addComponent(jLabel4)
                        .addComponent(TotalPrice, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGap(18, 18, 18)
                    .addComponent(ClearButton, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addContainerGap(24, Short.MAX_VALUE))
            );
     
            pack();
        }// </editor-fold>                        
     
        private void SausageToppingActionPerformed(java.awt.event.ActionEvent evt) {                                               
            // TODO add your handling code here:
        }                                              
     
        private void smallRadioActionPerformed(java.awt.event.ActionEvent evt) {                                           
            // TODO add your handling code here:
        }                                          
     
        private void CalculateButtonActionPerformed(java.awt.event.ActionEvent evt) {                                                
            // declaring variables and create constants
            NumberFormat currency = NumberFormat.getCurrencyInstance();        //formats
            double SmallPizza, MediumPizza, LargePizza;
            double Sausage, Salami, Mushrooms, Pepperoni, Olives, Anchovies;
            SmallPizza = 6.99;
            MediumPizza = 8.99;
            LargePizza = 10.99;
            Sausage = 1.49;
            Salami = 1.49;
            Pepperoni = 1.49;
            Olives = 0.99;
            Mushrooms = 0.99;
            Anchovies = 0.99;
     
     
     
     
     
        }                                               
     
        private void ClearButtonActionPerformed(java.awt.event.ActionEvent evt) {                                            
            // clears everything. If radiobutton topping/ if price is selected, reset it.
            smallRadio.setSelected(false);
            medRadio.setSelected(false);
            largeRadio.setSelected(false);
            SausageTopping.setSelected(false);
            SalamiTopping.setSelected(false);
            PepperoniTopping.setSelected(false);
            OlivesTopping.setSelected(false);
            MushroomsTopping.setSelected(false);
            AnchoviesTopping.setSelected(false);
            TotalPrice.setText(null);
     
     
        }                                           
     
        /**
         * @param args the command line arguments
         */
        public static void main(String args[]) {
            /* Set the Nimbus look and feel */
            //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
            /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
             * For details see [url]http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html[/url] 
             */
            try {
                for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                    if ("Nimbus".equals(info.getName())) {
                        javax.swing.UIManager.setLookAndFeel(info.getClassName());
                        break;
                    }
                }
            } catch (ClassNotFoundException ex) {
                java.util.logging.Logger.getLogger(PizzaGUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
            } catch (InstantiationException ex) {
                java.util.logging.Logger.getLogger(PizzaGUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
            } catch (IllegalAccessException ex) {
                java.util.logging.Logger.getLogger(PizzaGUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
            } catch (javax.swing.UnsupportedLookAndFeelException ex) {
                java.util.logging.Logger.getLogger(PizzaGUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
            }
            //</editor-fold>
     
            /* Create and display the form */
            java.awt.EventQueue.invokeLater(new Runnable() {
                public void run() {
                    new PizzaGUI().setVisible(true);
                }
            });
        }
     
        // Variables declaration - do not modify                     
        private javax.swing.JCheckBox AnchoviesTopping;
        private javax.swing.JButton CalculateButton;
        private javax.swing.JButton ClearButton;
        private javax.swing.JCheckBox MushroomsTopping;
        private javax.swing.JCheckBox OlivesTopping;
        private javax.swing.JCheckBox PepperoniTopping;
        private javax.swing.JCheckBox SalamiTopping;
        private javax.swing.JCheckBox SausageTopping;
        private javax.swing.JTextField TotalPrice;
        private javax.swing.ButtonGroup buttonGroup1;
        private javax.swing.JLabel jLabel1;
        private javax.swing.JLabel jLabel4;
        private javax.swing.JPanel jPanel1;
        private javax.swing.JPanel jPanel2;
        private javax.swing.JRadioButton largeRadio;
        private javax.swing.JRadioButton medRadio;
        private javax.swing.JRadioButton smallRadio;
        // End of variables declaration                   
    }
    Last edited by Ancharius; April 3rd, 2014 at 03:59 PM. Reason: Adding code


  2. #2
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    Default Re: Getting a calculate button to work, and clear button to reset everything.

    Any help would be appreciated.
    What I have tried is adding action listeners for the jradiobutton and checkboxes but I wasn't sure where to place them.

    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;

    smallRadio.addActionListener();
    medRadio.addActionListener();
    largeRadio.addActionListener()

    small, med, large are the variable names of my sizes in the picture.
    And I was going to do the same for the toppings.

  3. #3
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    Default Re: Getting a calculate button to work, and clear button to reset everything.

    You are asking for help with the graphical GUI Builder rather than help with Java. Most here would be able to help you code the action listeners "by hand," but adding them to the graphical builder's code is a different process, one less familiar to most here. You may get help if you're patient. Then again, you may not.

    Good luck!

  4. #4
    Super Moderator copeg's Avatar
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    Default Re: Getting a calculate button to work, and clear button to reset everything.

    Suggested reading:
    How to Write an Action Listener (The Java™ Tutorials > Creating a GUI With JFC/Swing > Writing Event Listeners)
    GUI Builders Pitfalls

  5. The Following User Says Thank You to copeg For This Useful Post:

    Ancharius (April 3rd, 2014)

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