Cannot find isSelected() method for JCheckBox

[coderz]

Hello Everyone,

I am in desperate need of help. I have a gui program with checkboxes and when I use isSelected() method to see which box is selected, I am getting the error stating "cannot find symbol: method isSelected()".

Please help me.

package bhasinprogram2;

import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import java.awt.Component;
import java.awt.GridLayout;

import java.text.*;
import javax.swing.*;

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 *
 * @author Robogeekster
 */
public class Pizza extends JFrame implements ActionListener,KeyListener{
    
    
    double smallPizzaPrice = 6.50, mediumPizzaPrice = 8.50,largePizzaPrice = 10.0;
    public static String[]PizzaSize;// ;
    private String[] CrustType;//{"Thin","Medium","Pan"};
    private String[] PizzaToppings;//{"Tomato","Green Pepper","Black Olives","Mushroom","Extra Cheese","Pepproni","Sausage"};
    
    static final String CLEAR = "clear";
    static final String TOTAL = "total";
    private Object button1;
    private Object small;
    private Object text1;
    private Object Small;
    private Object medium;
    private Object large;
    private Object checkbox1;
    private Object checkbox2;
    private Object checkbox3;
    private Object checkbox4;
    private Object checkBox5;
    private Object checkBox7;
    private Object checkBox6;
    
 
    
    Pizza()
    {
        getContentPane().setLayout(null);
        setBackground(Color.white);
        
        
      //  PizzaSize = new String[3];
       // CrustType = new String[3];
       // PizzaToppings = new String[7];
        initializeComponents();
    }
    
    
 public final void initializeComponents()
 {
     
     JLabel label1 = new JLabel("Name: ");
     JLabel label2 = new JLabel("Address: ");
     
     JLabel SizeLabel = new JLabel("Select Pizza size");
     SizeLabel.setFont(new Font("Arial",Font.BOLD,14));
     
     JLabel Toppings = new JLabel("Each Topping $1.50");
     Toppings .setForeground(new Color(0,0,205));
     Toppings.setFont(new Font("Arial",Font.BOLD,14));
     
     JLabel CrustLabel = new JLabel("Pizza Type");
     CrustLabel.setForeground(new Color(200,0,0));
     CrustLabel.setFont(new Font("Arial",Font.BOLD,14));
     
     JTextField text1 = new JTextField(20);
     JTextField text2 = new JTextField(20);
     
     JRadioButton Small = new JRadioButton("Small: $6.50",true);
     JRadioButton medium = new JRadioButton("Medium: $8.50",true);
     JRadioButton large = new JRadioButton("Large: $10.00",true);
     ButtonGroup group1 = new ButtonGroup();
     group1.add(Small);
     group1.add(medium);
     group1.add(large);
     
     JCheckBox checkbox1 = new JCheckBox("Tomato",false);
     JCheckBox checkbox2 = new JCheckBox("Green Pepper",false);
     JCheckBox checkbox3 = new JCheckBox("Black Olives",false);
     JCheckBox checkbox4 = new JCheckBox("Mushrooms",false);
     JCheckBox checkBox5 = new JCheckBox("Extra Cheese",false);
     JCheckBox checkBox6 = new JCheckBox("Pepproni",false);
     JCheckBox checkBox7 = new JCheckBox("Sausage",false);
     
     JButton button1 = new JButton("Process Order");
     Small.addActionListener(this);
     medium.addActionListener(this);
     large.addActionListener(this);
     
     checkbox1.addActionListener(this);
     checkbox2.addActionListener(this);
     checkbox3.addActionListener(this);
     checkbox4.addActionListener(this);
     checkBox5.addActionListener(this);
     checkBox6.addActionListener(this);
     checkBox7.addActionListener(this);
     
     button1.addActionListener(this);
     
     label1.setBounds(50,50,200,20);
     label2.setBounds(50,80,200,20);
     
     text1.setBounds(200,50,200,20);
     text2.setBounds(200,80,200,20);
     
     Small.setBounds(300,170,100,20);
     medium.setBounds(400,170,100,20);
     large.setBounds(500,170,100,20);
     
     checkbox1.setBounds(50,230,300,20);
     checkbox2.setBounds(50,260,300,20);
     checkbox3.setBounds(50,290,300,20);
     checkbox4.setBounds(50,320,300,20);
     checkBox5.setBounds(50,350,300,20);
     checkBox6.setBounds(50,380,300,20);
     checkBox7.setBounds(50,410,300,20);
     
     button1.setBounds(50,600,100,20);
     
     add(label1);
     add(label2);
     
     add(text1);
     add(text2);
     
     add(small);
     add(medium);
     add(large);
     
     add(checkbox1);
     add(checkbox2);
     add(checkbox3);
     add(checkbox4);
     add(checkBox5);
     add(checkBox6);
     add(checkBox7);
     
     setVisible(true);
      setSize(1000,700);
 }
 
    @Override
 public void actionPerformed(ActionEvent e)
 {
     if(e.getSource()== button1)
     {
         JOptionPane.showMessageDialog(this,text1.toString()+",Thank you"
                                        +"\nYour pizza will be ready in few minutes",
                                         "Order Confirmed",JOptionPane.INFORMATION_MESSAGE);
     }
     
     CalculatePrice();
 }
 
 private void CalculatePrice()
 {
     double cost = 0.0;
     
     NumberFormat numberForm= NumberFormat.getNumberInstance();
     DecimalFormat moneyForm = (DecimalFormat)numberForm;
     moneyForm.applyPattern("0.00");
     
     if(Small.isSelected())
     {
         cost += smallPizzaPrice;
     }
     
     if(medium.isSelected())
     {
         cost += mediumPizzaPrice;
     }
     
     if(large.isSelected())
     {
         cost += largePizzaPrice;
     }
     
     if(checkbox1.isSelected())
     {
         cost += 1.50;
     }
     if(checkbox2.isSelected())
     {
         cost += 1.50;
     }
     if(checkbox3.isSelected())
     {
         cost += 1.50;
     }
     if(checkbox4.isSelected())
     {
         cost += 1.50;
     }
     if(checkBox5.isSelected())
     {
         cost += 1.50;
     }
     if(checkBox6.isSelected())
     {
         cost += 1.50;
     }
     if(checkBox7.isSelected())
     {
         cost +=1.50;
     }
         
 }

 public void KeyTyped(KeyEvent e)
 {
 }
 
 public void KeyPressed(KeyEvent e)
 {
     
 }
 
 public void KeyReleased(KeyEvent e)
 {
     
 }

    @Override
    public void keyTyped(KeyEvent ke) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public void keyPressed(KeyEvent ke) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public void keyReleased(KeyEvent ke) {
        throw new UnsupportedOperationException("Not supported yet.");
    }
 
 
}

[Tolls]

That's because, as far as the compiler is concerned, those are not JCheckBoxes.
You have declared them as Objects.

Is there any particular reason for that?