Please help me - accumulating scores!

[Tayler Mac]

I need to keep count of how many scores are entered using the enterButton, accumulate those scores and find the average score, best score and worst score. Without using arrays. But I'm kind of stuck. My code compiles but it doesn't run correctly. Can someone please help me??

 

import javax.swing.*;
import java.text.NumberFormat;
import java.awt.event.*;
import java.awt.*;

public class StudentScoresApp 
{


	public static void main(String args[])
	{
		//construct the frame
		JFrame frame = new StudentScoresFrame();
		frame.setVisible(true);
	} //end main

} //end StudentScoresApp class

class StudentScoresFrame extends JFrame
{
	public StudentScoresFrame()
	{
		//set properties for the frame
		setTitle("Test Scores");
		setSize(250, 210);
		setResizable(false);
		setLocationRelativeTo(null);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

		//construct the panel
		JPanel panel = new StudentScoresPanel();
		add(panel);

	} //end StudentScoresFrame() constructor

} //end StudentScoresFrame class

class StudentScoresPanel extends JPanel implements ActionListener
{

	//declare buttons, text fields, and labels
	private JButton enterButton, clearButton, exitButton;
	private JTextField scoreField, numberField, averageField, bestField, worstField;
	private JLabel scoreLabel, numberLabel, averageLabel, bestLabel, worstLabel;

	public StudentScoresPanel()
	{

		//set the layout for the StudentScoresPanel
		setLayout(new BorderLayout());

		//construct a panel for the display
		JPanel displayPanel = new JPanel();
		displayPanel.setLayout(new FlowLayout(FlowLayout.RIGHT));

		//construct and add labels and text fields to the panel
		scoreLabel = new JLabel("Test score:");
		displayPanel.add(scoreLabel);

		scoreField = new JTextField(10);
		scoreField.addActionListener(this);
		displayPanel.add(scoreField);

		numberLabel = new JLabel("Number of scores:");
		displayPanel.add(numberLabel);

		numberField = new JTextField(10);
		numberField.setEditable(false);
		numberField.setFocusable(false);
		displayPanel.add(numberField);

		averageLabel = new JLabel("Average score:");
		displayPanel.add(averageLabel);

		averageField = new JTextField(10);
		averageField.setEditable(false);
		averageField.setFocusable(false);
		displayPanel.add(averageField);

		bestLabel = new JLabel("Best score:");
		displayPanel.add(bestLabel);

		bestField = new JTextField(10);
		bestField.setEditable(false);
		bestField.setFocusable(false);
		displayPanel.add(bestField);

		worstLabel = new JLabel("Worst score:");
		displayPanel.add(worstLabel);

		worstField = new JTextField(10);
		worstField.setEditable(false);
		worstField.setFocusable(false);
		displayPanel.add(worstField);

		//construct a panel for the buttons
		JPanel buttonPanel = new JPanel();
		buttonPanel.setLayout(new FlowLayout(FlowLayout.CENTER));

		//construct and add buttons to the panel
		enterButton = new JButton("Enter score");
		enterButton.addActionListener(this);
		buttonPanel.add(enterButton);

		clearButton = new JButton("Clear");
		clearButton.addActionListener(this);
		buttonPanel.add(clearButton);

		exitButton = new JButton("Exit");
		exitButton.addActionListener(this);
		buttonPanel.add(exitButton);

		//add panels to the main panel
		add(displayPanel, BorderLayout.CENTER);
		add(buttonPanel, BorderLayout.SOUTH);

	} //end StudentScorePanel() constructor

	public void actionPerformed(ActionEvent e)
	{
		double average = 0.0;
		double best, worst;
		double scores = 0.0;
		double sum = 0.0;
		double count = 0.0;
		String choice = "";

		Object source = e.getSource();

		if(source == enterButton)
		{
		 


			scores = Double.parseDouble(scoreField.getText());


			count = scoreCount(scores)

			average = calculateAverage(scores, count);

			numberField.setText("" + count);
 			averageField.setText("" + average);

 			best = bestScore(scores);
 			bestField.setText("" + best);

 			worst = worstScore(scores);
 			worstField.setText("" + worst);

			scoreField.requestFocus();
			scoreField.selectAll();


		} //end if

 
		else if(source == clearButton)
		{
			scoreField.setText("");
			numberField.setText("");
			averageField.setText("");
			bestField.setText("");
			worstField.setText("");
			scoreField.requestFocus();
		} //end else if

		else if (source == exitButton)
		{
			System.exit(0);  
		} //end else



	} //end actionPerformed

 	 public static double scoreCount(double scores)
			{
				double count = 0;
				double numbers = 0.0;

				for(int i = 0; i <= numbers; i++)
				{
					count += 1;
				}
		return count;
			}
 
	 	public static double calculateAverage(double scores, double count)
		{

			double average = 0.0;
			double sum = 0.0;

			for(int i = 1; i <= count; i++)
			{
				sum += scores;
				average = sum / count;
			}
			return average;

		} //end calculateAverage
  

	public static double bestScore(double scores)
	{
		double best = 0.0;
		for(int i = 0; i < scores; i++)
		{
			if(best >= scores)
			{
				best = scores;
			}
		}
		return best;
	}

	public static double worstScore(double scores)
	{
		double worst = 0.0;
		for(int i = 0; i < scores; i++)
		{
			if(worst <= scores)
			{
				worst = scores;
			}
		}
		return worst;
 	}

}  //end StudentScoresPanel class

Please help me!!

[Campbell Ritchie]

Welcome to JavaRanch

Start from scratch. with a pencil and paper. Write down something like this

Somebody enters 65

How many scores have I got?

What is the worst score to date

What is the best score you have to date?

Somebody enters a different score

etc

It is quite easy, if you break it down into tiny steps like that and think how you are going to handle each of them.

[Campbell Ritchie]

And start with a command-line version of your application. If you can't get the functionality, adding a GUI on top simplymakes things more difficult for you.