I am working on a problem for school and I am having an issue with the CalculateButtonHandler. I am also using an ExitButtonHandler but that is not giving me any issues. I have tried re-reading my textbook and have searched the web. After racking my brain over this issue I can't figure out why this won't work. This is my first GUI attempt and I am sure I will have to mess with the program to get it the way I want. I only want to know how to fix this CalculateButtonHandler issues as I can work on the rest if need be. Below is the code for the project.
Issues: Lines 38, 76 and 77: CalculateButtonHandler cannot be resolved to a type.
What does this mean and how can I go about fixing it?
//This program calculates the weighted average of four test scores.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.math.*;
public class SNHU6_4 extends JFrame
{
private static final int WIDTH = 400;
private static final int LENGTH = 300;
private JLabel testscore1L;
private JLabel weight1L;
private JLabel testscore2L;
private JLabel weight2L;
private JLabel testscore3L;
private JLabel weight3L;
private JLabel testscore4L;
private JLabel weight4L;
private JLabel scoreL;
private JTextField testscore1TF;
private JTextField weight1TF;
private JTextField testscore2TF;
private JTextField weight2TF;
private JTextField testscore3TF;
private JTextField weight3TF;
private JTextField testscore4TF;
private JTextField weight4TF;
private JTextField scoreTF;
private JButton calculateB;
private JButton exitB;
private CalculateButtonHandler cbHandler;
private ExitButtonHandler ebHandler;
public SNHU6_4()
{
//Creating the labels
testscore1L = new JLabel ("Enter first test score: ", SwingConstants.RIGHT);
testscore2L = new JLabel ("Enter second test score: ", SwingConstants.RIGHT);
testscore3L = new JLabel ("Enter third test score: ", SwingConstants.RIGHT);
testscore4L = new JLabel ("Enter fourth test score: ", SwingConstants.RIGHT);
weight1L = new JLabel ("Enter first test score weight : ", SwingConstants.RIGHT);
weight2L = new JLabel ("Enter second test score weight :", SwingConstants.RIGHT);
weight3L = new JLabel ("Enter third test score weight :", SwingConstants.RIGHT);
weight4L = new JLabel ("Enter fourth test score weight :", SwingConstants.RIGHT);
scoreL = new JLabel ("Final score: ", SwingConstants.RIGHT);
//Creating the text fields
testscore1TF = new JTextField ("0",5);
testscore1TF.setHorizontalAlignment(JTextField.CENTER);
testscore2TF = new JTextField ("0",5);
testscore1TF.setHorizontalAlignment(JTextField.CENTER);
testscore3TF = new JTextField ("0",5);
testscore3TF.setHorizontalAlignment(JTextField.CENTER);
testscore4TF = new JTextField ("0",5);
testscore4TF.setHorizontalAlignment(JTextField.CENTER);
weight1TF = new JTextField ("0",5);
weight1TF.setHorizontalAlignment(JTextField.CENTER);
weight2TF = new JTextField ("0",5);
weight2TF.setHorizontalAlignment(JTextField.CENTER);
weight3TF = new JTextField ("0",5);
weight3TF.setHorizontalAlignment(JTextField.CENTER);
weight4TF = new JTextField ("0",5);
weight4TF.setHorizontalAlignment(JTextField.CENTER);
scoreTF = new JTextField ("0",5);
scoreTF.setHorizontalAlignment(JTextField.CENTER);
//Creating the calculate button
calculateB = new JButton("Calculate");
cbHandler = new CalculateButtonHandler();
calculateB.addActionListener(cbHandler);
//Creating the exit button
exitB = new JButton("Exit");
ebHandler = new ExitButtonHandler();
exitB.addActionListener(ebHandler);
//Creating the window title
setTitle ("Weighted Average of Test Scores");
//Get the container
Container pane = getContentPane();
//Set the layout
pane.setLayout(new GridLayout(5, 4));
//Placing components in the pane
pane.add(testscore1L);
pane.add(testscore1TF);
pane.add(testscore2L);
pane.add(testscore2TF);
pane.add(testscore3L);
pane.add(testscore3TF);
pane.add(testscore4L);
pane.add(testscore4TF);
pane.add(weight1L);
pane.add(weight1TF);
pane.add(weight2L);
pane.add(weight2TF);
pane.add(weight3L);
pane.add(weight3TF);
pane.add(weight4L);
pane.add(weight4TF);
pane.add(calculateB);
pane.add(exitB);
//Set the window size
setSize(WIDTH, HEIGHT);
setVisible(true);
setDefaultCloseOperation(EXIT_ON_CLOSE);
}
private class CalculateButtonHanlder implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
double testscore1, testscore2, testscore3, testscore4;
double weight1, weight2, weight3, weight4;
double average1, average2, average3, average4;
double totalAverage;
testscore1 = Double.parseDouble(testscore1TF.getText());
testscore2 = Double.parseDouble(testscore2TF.getText());
testscore3 = Double.parseDouble(testscore3TF.getText());
testscore4 = Double.parseDouble(testscore4TF.getText());
weight1 = Double.parseDouble(weight1TF.getText());
weight2 = Double.parseDouble(weight2TF.getText());
weight3 = Double.parseDouble(weight3TF.getText());
weight4 = Double.parseDouble(weight4TF.getText());
average1 = testscore1 * weight1;
average2 = testscore2 * weight2;
average3 = testscore3 * weight3;
average4 = testscore4 * weight4;
totalAverage = average1 + average2 + average3 + average4;
scoreTF.setText("" + String.format("%,2f", totalAverage));
}
}
private class ExitButtonHandler implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
System.exit(0);
}
}
public static void main(String[] args)
{
SNHU6_4 rectObject = new SNHU6_4();
}
}
