изображения не загружаются

Окно рамки запускается, но фон и изображения переднего плана не загружаются, и размер рамки окна также очень и очень мал. Пожалуйста, помогите мне исправить ошибку.

вот код размещен

Aquarium.java
import java.awt.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.image.BufferedImage;
import java.awt.image.ImageObserver;
import java.util.Vector;

public class Aquarium extends Frame implements Runnable
{
    Image aquariumImage,memoryImage;
    BufferedImage bImage;
    Graphics memoryGraphics;
    Image [] fishImages=new Image[2];
    MediaTracker tracker;
    int numberFishes=12;
    Vector<Fish> fishes=new Vector<Fish>();
    Thread thread;
    boolean runOk=true;
    int sleepTime=110;
    Fish fish;

    Aquarium()
    {

        //set the title and assign tracker object
        setTitle("The Aquarium ");
        tracker=new MediaTracker(this);


        //add images to the tracker object to trace it


        fishImages[0]=Toolkit.getDefaultToolkit().getImage("src\fish1.gif");


        tracker.addImage(fishImages[0], 0);

        System.out.println("fish 1 size "+Toolkit.getDefaultToolkit().getImage("src\fish1.gif").getWidth(null));
        fishImages[1]=Toolkit.getDefaultToolkit().getImage("src\fish2.gif");


        tracker.addImage(fishImages[1], 0);
        aquariumImage =Toolkit.getDefaultToolkit().getImage("src\bubbles.gif");


        tracker.addImage(aquariumImage,0);


        setResizable(true);

        setVisible(true);

        //assign memory to the graphics and anotherImage object

        int dx=getSize().width;
        int dy=getSize().height;
        System.out.println("x value is "+dx+ " dy value is "+ dy);

        bImage=new BufferedImage(dx, dy,BufferedImage.TYPE_INT_ARGB);


        try
        {
        memoryGraphics=bImage.getGraphics();

        }
        catch(Exception exc)
        {
            System.out.println(exc.getCause());
            System.out.println(exc.getStackTrace());
        }
        //create a new thread and start the thread

        thread=new Thread();
        thread.start();





        try
        {
            tracker.waitForID(0);
        }
        catch (Exception ex) {
            System.out.println(ex.getMessage());
        }

        setSize(aquariumImage.getWidth(this),aquariumImage.getHeight(this));



        this.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent we)
            {
                System.exit(0);
                runOk=false;
            }
        });
    }


    public static void main(String ar[])
    {
        new Aquarium();
    }


    @Override
    public void run() 
    {


        //draw 4 edges of rectangle

        Rectangle edges=new Rectangle(0+getInsets().left,0+getInsets().top,
                                        getSize().width-(getInsets().left+getInsets().right),
                                        getSize().height-(getInsets().top+getInsets().bottom));


        //add fishes to the fishes vector

        for (int loopIndex=0; loopIndex<numberFishes;loopIndex++)
        {
            fishes.add(new Fish(fishImages[0],fishImages[1],edges,this));
            try
            {
                Thread.sleep(20);
            }
            catch (Exception e) {
                System.out.println(e.getMessage());

            }
        }




        while(runOk)
        {
            for(int loopIndex=0; loopIndex < numberFishes; loopIndex++)
            {
                fish=(Fish)fishes.elementAt(loopIndex);
                fish.swim();
            }

            try
            {
                Thread.sleep(sleepTime);
            }
            catch (Exception e) {
                System.out.println(e.getMessage());
            }
            repaint();
        }

    }
    public void update(Graphics g)
    {
        memoryGraphics.drawImage(aquariumImage, 0, 0, this);

        for(int loopIndex=0;loopIndex<numberFishes;loopIndex++)
        {
            ((Fish)fishes.elementAt(loopIndex)).drawFishImage(memoryGraphics);
        }
        g.drawImage(bImage, 0, 0, this);
    }
}
fish.java
import java.awt.*;
import java.util.Random;


public class Fish {

    Component tank;
    Image image1,image2;
    Point location,velocity;
    Rectangle edges;
    Random random;

    public Fish(Image image1,Image image2, Rectangle edges,Component tank) {
        random = new Random(System.currentTimeMillis());
        this.tank=tank;
        this.image1=image1;
        this.image2=image2;
        this.edges=edges;           
        this.location=new Point(100+ (Math.abs(random.nextInt())%300),
            100+Math.abs(random.nextInt())%100));    
        this.velocity=new Point(random.nextInt()%8,random.nextInt()%8);
    }

    public void swim() {

        //determine the optimum velocity to make the fish swim

        if(random.nextInt()%7<=1) {
            velocity.x += random.nextInt() % 4 ;
            velocity.x = Math.min(velocity.x, 8);
            velocity.x = Math.max(velocity.x, -8);
            velocity.y += random.nextInt() % 4;             
            velocity.y =  Math.min(velocity.y, 8);
            velocity.y = Math.max(velocity.y, -8);
        }

        //add the velocity to the location of the fish to make it move

        location.x += velocity.x;
        location.y += velocity.y;

        if(location.x < edges.x) {
            location.x=edges.x;
            velocity.x = -velocity.x;
        }

        if((location.x + image1.getWidth(tank)) > (edges.x + edges.width)) {
            location.x = edges.x + edges.width - image1.getWidth(tank);
            velocity.x = -velocity.x;
        }

        if(location.y < edges.y) {
            location.y = edges.y;
            velocity.y = -velocity.y;
        }

        if((location.y + image1.getHeight(tank)) > (edges.y + edges.height)) {
            location.y = edges.y + edges.height - image1.getHeight(tank);
            velocity.y = -velocity.y;
        }
    }

    public void drawFishImage(Graphics g) {
        if(velocity.x < 0) {
                g.drawImage(image1,location.x,location.y,tank);             
        }           
        else {
            g.drawImage(image2, location.x, location.y, tank);
        }
    }
}

Ответы на вопрос(3)

Ваш ответ на вопрос