wall

/**
 * @(#)Wall.java
 *
 * Wall Applet application
 *
 * @author Joseph Kraemer
 * @CSci 1130-01/51/91
 * @version 1.00 2014/7/17
 */

import java.awt.*;
import javax.swing.*;
import java.applet.*;
import java.util.*;
import java.awt.event.*;

public class Wall extends JApplet implements ActionListener
{

    JTextField enter;
    Boolean submit;
    JLabel bricks;
    JButton build;
    JPanel top;
    Image zombie;
    int value;

    public void init()
    {
        setLayout(new BorderLayout());

        top = new JPanel();
        build = new JButton ("AHHHHHH...ZOMBIES!");                         //button for building wall
        bricks = new JLabel("Enter between 1 & 20 rows to contruct:");
        enter = new JTextField(2);

        top.add(build);         //add zombie button
        top.add(bricks);        //add intructions
        top.add(enter);         //add text field
        add(top,BorderLayout.NORTH);


        build.addActionListener(this);


    }
    public void actionPerformed(ActionEvent ae)
    {
        if (ae.getSource()==build)
        {
            int value = Integer.parseInt(build.getText());
            if (value>0 && value <21)
            {
                submit = true;
                repaint();
            }
            else
            {
                submit = false;
                repaint();
            }

        }
    }


    public void paint(Graphics g)
    {
        super.paint(g);

        //add zombie image
        Image zombie = getImage(getCodeBase(),"Zombie.jpg");
        g.drawImage(zombie, 0, 45, this);

        if (submit = false) //add error message
        {
            g.setColor(Color.WHITE);
            g.setFont( new Font( "TimesRoman", Font.BOLD, 40 ));
            g.drawString("You must enter a number between 1 & 20!", 400, 100);  //add message
        }

        int brick_width = 50;
        int brick_height = 20;
        int spacing = 1;
        int x = 0;
        while(x<21)
        {
            drawBrick(g, nextInt(brick_width+spacing), nextInt(brick_height+spacing));
                x=x+getWidth()+50;
                x=x-25+getWidth()+50;
                x++;

        }

    }

    public void drawBrick(Graphics g, int x, int y)
    {
        g.setColor(new Color(150, 0, 0));
        g.fillRect(0, 635, 50, 20);
    }

}