Question

The purpose of this homework is to test your knowledge of GUI. Consider a fictional park where the entry price for 1 adult ticket is $50, and for 1 children ticket is $25. Write a simple GUI application that let user to enter the number of tickets and display the total price. The GUI should contain:

● One text field for the user to enter the number of adult tickets

● One text field for the user to enter the number of children tickets

● One button “Calculate total cost”

● One text field to display the total cost When the user clicks the button then the correct cost is displayed in the total price field. If the input text field is empty then it should be treated as 0 tickets.

Answer 1

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

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

public class TicketPriceGUI {
   static JFrame frame = new JFrame("JFrame Example");

   public static void main(String s[]) {
       JPanel panel = new JPanel();
       panel.setLayout(null);
       final JLabel label3 = new JLabel("Adult ticket $50.Children ticket $25");
       label3.setBounds(150, 15, 500, 30);
       JLabel label1 = new JLabel("Enter the number of adult ticket: ");
       label1.setBounds(200, 50, 300, 30);

       final JTextField adult = new JTextField(10);
       adult.setBounds(400, 50, 100, 30);

       JLabel label2 = new JLabel("Enter the number of children ticket: ");
       label2.setBounds(200, 100, 250, 30);
       // password field
       final JTextField children = new JTextField(10);
       children.setBounds(400, 100, 100, 30);

       JButton login = new JButton();
       login.setText("Calculate total cost");
       login.setBounds(200, 150, 250, 20);

       JLabel total = new JLabel("Total Price: ");
       total.setBounds(200, 200, 300, 30);

       final JTextField totalPrice = new JTextField(10);
       totalPrice.setBounds(400, 200, 100, 30);

       JButton exit = new JButton();
       exit.setText("Exit");
       exit.setBounds(320, 150, 100, 20);

      

       login.addActionListener(new ActionListener() {

           @Override
           public void actionPerformed(ActionEvent aE) {
               String a = adult.getText();
               String c = children.getText();
               int ad = 0;
               if (a.trim().length() != 0)
                   ad = Integer.parseInt(a);
               int ac = 0;
               if (c.trim().length() != 0)
                   ac = Integer.parseInt(c);
               totalPrice.setText((ac * 25 + ad * 50) + "");

           }
       });

       panel.add(label1);
       panel.add(label2);
       panel.add(label3);
       panel.add(adult);
       panel.add(children);
       panel.add(login);
       panel.add(exit);
       panel.add(totalPrice);
       panel.add(total);
       frame.add(panel);

       frame.setSize(600, 300);
       frame.setLocationRelativeTo(null);
       frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
       frame.setVisible(true);
   }
}

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