Hello. Here are the instructions for my assignment.

In BlueJ, start up the Simple GUI Extension.

Layout the application as shown in the image above.

You will need add a mouseClicked event for the Calculate button.

Save this GUI application and edit the code.

To convert the textfield for the age into an integer, you will need something similar to:

int age = Integer.parseInt( txtAge.getText() );

Calculate the lower target heart rate and store this in a variable. According to the CDC this is:

For moderate activity: lower heart rate = (220 - age) * 0.5

For vigorous activity: lower heart rate = (220 - age) * 0.7

Calculate the upper target heart rate and store this in a variable. According to the CDC this is:

For moderate activity: lower heart rate = (220 - age) * 0.7

For vigorous activity: lower heart rate = (220 - age) * 0.85

Display both of these heart rates using appropriate text fields. To format this display, you will need code similar to:

txtMax.setText( String.format("%.2f", maxRate) );

This is the code I have so far. And these are the errors that come up. What am I doing wrong?

/** *Text genereted by Simple GUI Extension for BlueJ */ import javax.swing.UIManager.LookAndFeelInfo; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.event.MouseWheelEvent; import java.awt.event.MouseWheelListener; import javax.swing.border.Border; import javax.swing.*;

public class GUI_project extends JFrame { private JMenuBar menuBar; private JButton button1; private JLabel label1; private JLabel label2; private JLabel label3; private JRadioButton rbModerate; private JRadioButton rbVigorous; private JTextField txtAge; private JTextField txtLow; private JTextField txtMax;

//Constructor public GUI_project(){

this.setTitle("GUI_project"); this.setSize(500,400); //menu generate method generateMenu(); this.setJMenuBar(menuBar);

//pane with null layout JPanel contentPane = new JPanel(null); contentPane.setPreferredSize(new Dimension(500,400)); contentPane.setBackground(new Color(192,192,192));

button1 = new JButton(); button1.setBounds(37,163,181,64); button1.setBackground(new Color(214,217,223)); button1.setForeground(new Color(0,0,0)); button1.setEnabled(true); button1.setFont(new Font("sansserif",0,12)); button1.setText("Calculate"); button1.setVisible(true); //Set methods for mouse events //Call defined methods button1.addMouseListener(new MouseAdapter() { public void mouseClicked(MouseEvent evt) { mouseButtonClicked(evt); } });

label1 = new JLabel(); label1.setBounds(61,18,200,35); label1.setBackground(new Color(214,217,223)); label1.setForeground(new Color(0,0,0)); label1.setEnabled(true); label1.setFont(new Font("sansserif",0,12)); label1.setText("Target Heart Rate Calculator"); label1.setVisible(true);

label2 = new JLabel(); label2.setBounds(15,65,90,35); label2.setBackground(new Color(214,217,223)); label2.setForeground(new Color(0,0,0)); label2.setEnabled(true); label2.setFont(new Font("sansserif",0,12)); label2.setText("Age"); label2.setVisible(true);

label3 = new JLabel(); label3.setBounds(125,294,90,35); label3.setBackground(new Color(214,217,223)); label3.setForeground(new Color(0,0,0)); label3.setEnabled(true); label3.setFont(new Font("sansserif",0,12)); label3.setText("to"); label3.setVisible(true);

rbModerate = new JRadioButton(); rbModerate.setBounds(167,53,150,35); rbModerate.setBackground(new Color(214,217,223)); rbModerate.setForeground(new Color(0,0,0)); rbModerate.setEnabled(true); rbModerate.setFont(new Font("sansserif",0,12)); rbModerate.setText("Moderate Activity"); rbModerate.setVisible(true);

rbVigorous = new JRadioButton(); rbVigorous.setBounds(166,84,90,35); rbVigorous.setBackground(new Color(214,217,223)); rbVigorous.setForeground(new Color(0,0,0)); rbVigorous.setEnabled(true); rbVigorous.setFont(new Font("sansserif",0,12)); rbVigorous.setText("Vigorous Activity"); rbVigorous.setVisible(true);

txtAge = new JTextField(); txtAge.setBounds(45,66,90,35); txtAge.setBackground(new Color(255,255,255)); txtAge.setForeground(new Color(0,0,0)); txtAge.setEnabled(true); txtAge.setFont(new Font("sansserif",0,12)); txtAge.setText("21"); txtAge.setVisible(true);

txtLow = new JTextField(); txtLow.setBounds(24,295,90,35); txtLow.setBackground(new Color(255,255,255)); txtLow.setForeground(new Color(0,0,0)); txtLow.setEnabled(true); txtLow.setFont(new Font("sansserif",0,12)); txtLow.setText("0"); txtLow.setVisible(true);

txtMax = new JTextField(); txtMax.setBounds(149,295,90,35); txtMax.setBackground(new Color(255,255,255)); txtMax.setForeground(new Color(0,0,0)); txtMax.setEnabled(true); txtMax.setFont(new Font("sansserif",0,12)); txtMax.setText("0"); txtMax.setVisible(true);

//adding components to contentPane panel contentPane.add(button1); contentPane.add(label1); contentPane.add(label2); contentPane.add(label3); contentPane.add(rbModerate); contentPane.add(rbVigorous); contentPane.add(txtAge); contentPane.add(txtLow); contentPane.add(txtMax);

//adding panel to JFrame and seting of window position and close operation this.add(contentPane); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.setLocationRelativeTo(null); this.pack(); this.setVisible(true); }

//Method mouseClicked for button1 private void mouseButtonClicked (MouseEvent evt) { //TODO try{ int age = Integer.parseInt( txtAge.getText()); } catch (NumberFormatException nfe) { System.out.println("ERROR: Bad age input. Setting age to 18."); txtAge.setText("18"); age = 18; if (rbModerate.isSelected()) { txtLow = (220 - age) * 0.5; } if (rbVigorous.isSelected()) { txtLow = (220 - age) * 0.7; } if (rbModerate.isSelected()) { txtMax = (220 - age) * 0.7; } if (rbVigorous.isSelected()) { txtMax = (220 - age) * 0.85; } txtLow.setText( String.format( "%.2f", txtLow) ); txtMax.setText( String.format("%.2f", txtMax) ); } }

//methof for generate menu public void generateMenu(){ menuBar = new JMenuBar();

JMenu file = new JMenu("File"); JMenu tools = new JMenu("Tools"); JMenu help = new JMenu("Help");

JMenuItem open = new JMenuItem("Open "); JMenuItem save = new JMenuItem("Save "); JMenuItem exit = new JMenuItem("Exit "); JMenuItem preferences = new JMenuItem("Preferences "); JMenuItem about = new JMenuItem("About ");

file.add(open); file.add(save); file.addSeparator(); file.add(exit); tools.add(preferences); help.add(about);

menuBar.add(file); menuBar.add(tools); menuBar.add(help); }

public static void main(String[] args){ System.setProperty("swing.defaultlaf", "com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel"); javax.swing.SwingUtilities.invokeLater(new Runnable() { public void run() { new GUI_project(); } }); } }

GUI-project Compile Undo Cut Copy Paste Find Close Source Code /TODO try int age = Integer.parselnt( txtage.getText()); catch (NumberFormatException nfe) System.out.println("ERROR: Bad age input. Setting age to txtAge.setText("18" e18: if (rbModerate.isSelected)) ( txtLow = (220 -age) * 0.5; if (rbVigorous.isSelected(O) txtLow = (220 -age) * 0.7; if (rbModerate.isSelected)) txtMax (220 -age) * 0.7; if (rbVigorous.isSelected)) txtMax (220 -age) * 0.85; txtLow.setText( String.format ".2f", txtLow) txtMax.setText( String. format("$.2f", txtHax) //methof for generate menu