/*Imports*/

import java.applet.Applet;
import java.lang.*;
import java.awt.*;
import java.util.*;
import java.io.*;

public class average extends Applet {

/*Declare Variables*/

	Button studentAverage, classAverage, clearData;
	TextField textName, textG1, textG2, textG3, textG4, textG5, textG6;
	int process;
	float floatG1, floatG2, floatG3, floatG4, floatG5, floatG6, staverage, sttotal, stnumber, claverage;
	String stringName;
	Panel p;
	Graphics g;
	Font font;

	public void init() {

/*Intialize program*/

			process = 0;                
			floatG1 = 0;
			floatG2 = 0;
			floatG3 = 0;
			floatG4 = 0;
			floatG5 = 0;
			floatG6 = 0;
			staverage = 0;
			sttotal = 0;
			stnumber = 0;
			claverage = 0;

/*Setup Table*/

			setLayout(new BorderLayout());
			Panel p = new Panel();
			p.setLayout(new GridLayout(3,8));

/*First Row*/

				p.add(new Label ("Student Name"));
				p.add(new Label (" "));
				p.add(new Label ("Grade 1"));
				p.add(new Label ("Grade 2"));
				p.add(new Label ("Grade 3"));
				p.add(new Label ("Grade 4"));
				p.add(new Label ("Grade 5"));
				p.add(new Label ("Grade 6"));

/*Second Row*/

				textName = new TextField(1);
				p.add(textName);
				p.add(new Label (" "));
				textG1 = new TextField(1);
				p.add(textG1);
				textG2 = new TextField(1);
				p.add(textG2);
				textG3 = new TextField(1);
				p.add(textG3);
				textG4 = new TextField(1);
				p.add(textG4);
				textG5 = new TextField(1);
				p.add(textG5);
				textG6 = new TextField(1);
				p.add(textG6);

/*Third Row*/

				p.add(new Label (" "));
				studentAverage = new Button ("Student Average");
				p.add(studentAverage);
				p.add(new Label (" "));
				clearData = new Button ("Clear Data");
				p.add(clearData);
				p.add(new Label (" "));
				p.add(new Label (" "));
				classAverage = new Button ("Class Average");
				p.add(classAverage);
				p.add(new Label (" "));
			
			add("South", p);

	}

/*Hit Return Key*/

	public boolean action (Event HitReturnKey, Object arg) {
                
/*In text boxes*/

		if(HitReturnKey.target == studentAverage) {

			stringName = textName.getText();
			floatG1 = (float)intFromTextField(textG1);
			floatG2 = (float)intFromTextField(textG2); 
			floatG3 = (float)intFromTextField(textG3);
			floatG4 = (float)intFromTextField(textG4);
			floatG5 = (float)intFromTextField(textG5);
			floatG6 = (float)intFromTextField(textG6);
			staverage = ((floatG1 + floatG2 + floatG3 + floatG4 + floatG5 + floatG6) / 6);
			sttotal = staverage + sttotal;
			stnumber = 1 + stnumber;
			process = 1;
			repaint();

		}

/*Clear class talley*/

		if(HitReturnKey.target == clearData) {

			sttotal = 0;
			stnumber = 0;
			process = 2;
			repaint();

		}

/*Compute class average*/

		if(HitReturnKey.target == classAverage) {
			claverage = sttotal / stnumber;
			process = 3;
			repaint();

		}
		return super.action(HitReturnKey, arg);
	}
        
	public void paint(Graphics g) {

		g.setFont(new Font("TimesRoman", Font.BOLD, 18));

		if (process == 0) {

			g.drawString("Enter a students name and grades to calculat the average.", 50, 50);

		}

		if (process == 1) {

			g.drawString("The average for " + stringName + " is " + staverage + ".", 50, 50);

		}

		if (process == 2) {

			g.drawString("The memory has been cleared.", 50, 50);

		}

		if (process == 3) {

			g.drawString("The class average for " + (int)stnumber + " student(s) is " + claverage + ".", 50, 50);

		}

	}	

	int intFromTextField(TextField tf) {
		String TextforConversion;
		int IntegerReturned;
		TextforConversion = tf.getText();
		try {
			IntegerReturned = Integer.parseInt(TextforConversion);
		}
		catch (Exception e) {
			IntegerReturned = 0;
		}
		return IntegerReturned;
	}

}