Strange Black rectangle in JPanel

Question

I have created a program that uses 2 classes a driver class and a resource class. However, when I run the driver class, a window comes up with a strange black rectangle. To make things easier to understand, here are my two classes.
Driver Class:
   import javax.swing.JFrame;
   public class ProjectDriver
      public static void main(String[] args)
         JFrame frame = new JFrame("Project");
         frame.setSize(1000, 700);
         frame.setLocation(0, 0);
         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         frame.setContentPane(new ProjectPanelMine());
         frame.setVisible(true);
   }Resource class:
   import javax.swing.*;
   import java.awt.*;
   import javax.swing.event.*;
   import java.awt.image.*;
   import java.awt.event.*;
    public class ProjectPanelMine extends JPanel{
      private int grow = (int)(Math.random() * 4);
      private static final ImageIcon EUCLID = new ImageIcon("euclid.png");
      private BufferedImage myImage;
      private Graphics2D myBuffer;
      private Timer t1,t2,t3;
      private int xpoints[]= {(int)(Math.random()*1000),(int)(Math.random()*1000),(int)(Math.random()*1000)};
      private int ypoints[]={(int)(Math.random()*1000),(int)(Math.random()*1000),(int)(Math.random()*1000)};
      private int wpoints[]= {(int)(Math.random()*1000),(int)(Math.random()*1000),(int)(Math.random()*1000),(int)(Math.random()*1000)};
      private int zpoints[]={(int)(Math.random()*1000),(int)(Math.random()*1000),(int)(Math.random()*1000),(int)(Math.random()*1000)};
       public ProjectPanelMine(){
         myImage = new BufferedImage(1000,700, BufferedImage.TYPE_INT_RGB);
         myBuffer = (Graphics2D)myImage.getGraphics();
         t1 = new Timer(5, new Listener1());
         t2 = new Timer(3000, new Listener2());
         t2 = new Timer(5000, new Listener3());
         t1.start();
       public class Listener1 implements ActionListener{
          public void actionPerformed(ActionEvent event){
            if (Math.random()>.7){
               grow = (int)(Math.random() * 4);
                         if(Math.random() > .5)
                         grow = -grow;
                         System.out.println(grow);
            myBuffer.setColor(Color.blue);
            myBuffer.drawRect(0,0,1000,700);
            myBuffer.drawImage(EUCLID.getImage(), 10, 10,152,188, null);
            myBuffer.setStroke(new BasicStroke(3.0f));
            xpoints[0] += grow; xpoints[0] += grow; xpoints[1] += grow;
            ypoints[0] += grow; ypoints[0] += grow; ypoints[1] += grow;
            wpoints[0] += grow; wpoints[0] += grow; wpoints[1] += grow; wpoints[2] += grow;
            zpoints[0] += grow; zpoints[0] += grow; zpoints[1] += grow; zpoints[2] += grow;
                myBuffer.drawPolygon(xpoints, ypoints,3);
            myBuffer.drawPolygon(wpoints, zpoints,4);
            repaint();
       public class Listener2 implements ActionListener{
          public void actionPerformed(ActionEvent event){
       public class Listener3 implements ActionListener{
          public void actionPerformed(ActionEvent event){
       public void paintComponent(Graphics g){
         g.drawImage(myImage, 0,0,getWidth(),getHeight(), null);
   }And the result, again, is a frame with a black rectangle filling up most of my screen that I don't want.
So, what is the problem?
Thanks in advance,
Eric

Answer 1

However, when I run the driver class, a window comes up with a strange black rectangleBecause a newly created image starts off as black. The blue color fills in as you consecutively draw polygons.
I would have a thin line of white around the strange black box. Because you did a drawRect instead of a fillRect.