I have the following three pieces of code but don\'t know where each should go i
ID: 3657371 • Letter: I
Question
I have the following three pieces of code but don't know where each should go in order for the whole program to run. Code #1: pacckage tripcomputer import javax.swing.*; import java.awt.*; import java.awt.event.*; public class TripComputerApplication extends JFrame implements ActionListener { public static final int WIDTH = 300; public static final int HEIGHT = 200; private TripComputer theComputer; public JLabel totalTimeLabel; public JTextField distanceTextField; public JTextField speedTextField; public JTextField timeTextField; /** * Creates a new instance of TripComputerApplication */ public TripComputerApplication() { setTitle("Trip Time Computer"); setSize(WIDTH, HEIGHT); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); Container contentPane = getContentPane(); contentPane.setBackground(Color.GREEN); contentPane.setLayout(new BorderLayout()); // Do the panel for the rest stop timeTextField = new JTextField(); JLabel timeLabel = new JLabel("Stop Time (hours)"); JButton stopButton = new JButton("Add Stop"); stopButton.addActionListener(this); JPanel stopPanel = new JPanel(); stopPanel.setLayout(new GridLayout(3, 1, 30, 0)); stopPanel.add(timeTextField); stopPanel.add(timeLabel); stopPanel.add(stopButton); contentPane.add(stopPanel, BorderLayout.WEST); // Do the panel for the leg distanceTextField = new JTextField(); JLabel distanceLabel = new JLabel("Distance (miles)"); speedTextField = new JTextField(); JLabel speedLabel = new JLabel("Speed (mph)"); JButton legButton = new JButton("Add Leg"); legButton.addActionListener(this); JPanel legPanel = new JPanel(); legPanel.setLayout(new GridLayout(5, 1, 30, 0)); legPanel.add(distanceTextField); legPanel.add(distanceLabel); legPanel.add(speedTextField); legPanel.add(speedLabel); legPanel.add(legButton); contentPane.add(legPanel, BorderLayout.EAST); totalTimeLabel = new JLabel("Your trip time so far (hours): "); contentPane.add(totalTimeLabel, BorderLayout.SOUTH); theComputer = new TripComputer(); } public void actionPerformed(ActionEvent e) { String actionCommand = e.getActionCommand(); Container contentPane = getContentPane(); if (actionCommand.equals("Add Leg")){ try{ double speed = Double.parseDouble(speedTextField.getText().trim()); double distance = Double.parseDouble(distanceTextField.getText().trim()); theComputer.computeLegTime(distance, speed); totalTimeLabel.setText("Your trip time so far (hours): " + theComputer.getTripTime()); } catch(TripComputerException ex){ totalTimeLabel.setText("Error: " + ex.getMessage()); } catch(Exception ex){ totalTimeLabel.setText("Error in speed or distance: " + ex.getMessage()); } } else if (actionCommand.equals("Add Stop")){ try{ double time = Double.parseDouble(timeTextField.getText().trim()); theComputer.takeRestStop(time); totalTimeLabel.setText("Your trip time so far (hours): " + theComputer.getTripTime()); } catch(TripComputerException ex){ totalTimeLabel.setText("Error: " + ex.getMessage()); } catch(Exception ex){ totalTimeLabel.setText("Error in time: " + ex.getMessage()); } } else System.out.println("Error in button interface."); } public static void main(String[] args) { TripComputerApplication gui = new TripComputerApplication(); gui.setVisible(true); } } Code #2: public class TripComputer { private double totalTime; private boolean restStopTaken; /** * Creates a new instance of TripComputer */ public TripComputer() { totalTime = 0.0; restStopTaken = true; } public void computeLegTime(double distance, double speed) throws TripComputerException { // throw an exception if distance <= 0 // throw an exception if speed <= 0 // compute legTime // update totalTime // clear the restStopTaken flag } public void takeRestStop(double time) throws TripComputerException { // throw an exception if time <= 0 // throw an exception if restStopTaken // update totalTime // set the restStopTaken flag } public double getTripTime(){ return totalTime; } } Code #3: public class TripComputerException extends Exception{ /** * Creates a new instance of TripComputerException */ public TripComputerException(String reason) { super(reason); } }Explanation / Answer
As code#1 is main package you need to include code #2 and code #3 in it as seperate classes and not methods...............