Java-Transformations-Translate-BluJay

Hi, I have recreated a similar game to space invaders and currently need to get my green ship to multiply a few times (3-5) and make them jump around similar to the game. Below is my code with all of the completions except I cannot seem to multiply my ships. Can anyone fill in the blanks? much appreciated.

Code:

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.geom.*;
import javax.imageio.ImageIO;
import java.awt.image.*;
import java.io.IOException;

public class SpaceInvaders extends JPanel implements ActionListener
{
    private Timer timer;
    private GeneralPath wall;
    private GeneralPath ship;
    private TexturePaint wallTexture;
    private BufferedImage wallImage;
    private TexturePaint shipTexture;
    
    public SpaceInvaders()
    {
        // add statements to create the general paths
        wall = new GeneralPath(GeneralPath.WIND_EVEN_ODD);
        wall.moveTo(1,1);
        wall.lineTo(100,1);
        wall.lineTo(100,50);
        wall.lineTo(70,50);
        wall.lineTo(70,40);
        wall.lineTo(30,40);
        wall.lineTo(30,50);
        wall.lineTo(1,50);
        wall.lineTo(1,1);
        wall.closePath();
        
        ship = new GeneralPath(GeneralPath.WIND_EVEN_ODD);
        ship.moveTo(1,30);
        ship.lineTo(20,1);
        ship.lineTo(100,1);
        ship.lineTo(120,30);
        ship.lineTo(100,50);
        ship.lineTo(100,40);
        ship.lineTo(70,40);
        ship.lineTo(60,55);
        ship.lineTo(50,40);
        ship.lineTo(20,40);
        ship.lineTo(20,50);
        ship.lineTo(1,30);
        ship.closePath();
       
        try {
            wallImage = ImageIO.read(this.getClass().getResource("CementWall-Program 2.jpg"));
            wallTexture = new TexturePaint(wallImage,
                new Rectangle(0,0,wallImage.getWidth(),wallImage.getHeight()));
        }
        catch (IOException e) {
            System.out.println("It failed");
        }
        
        // add statements to read in images and create textures
        
        timer = new Timer(1000,this); //second
        timer.setInitialDelay(0);
        timer.setCoalesce(true);
        timer.start();
    }
    
    public void actionPerformed(ActionEvent e)
    {
        this.repaint();
    }
    
    public void paintComponent(Graphics g)
    {
        super.paintComponent(g);
        customDrawingMethod(g);
    }
    
    public void customDrawingMethod(Graphics g)
    {
        Graphics2D g2d = (Graphics2D) g;
        AffineTransform trans = new AffineTransform();
        
        // replace all of this - draw walls and aliens
        g2d.setPaint(wallTexture);
        trans.setToTranslation(50,280);
        g2d.transform(trans);
        g2d.fill(wall);
        trans.setToTranslation(200,0);
        g2d.transform(trans);
        g2d.fill(wall);
        trans.setToTranslation(200,0);
        g2d.transform(trans);
        g2d.fill(wall);
        
        
        g2d.setPaint(Color.green);
        trans.setToTranslation(1,-250);
        g2d.transform(trans);
        g2d.fill(ship);
        trans.setToTranslation(-100,-250);
        g2d.transform(trans);
        g2d.fill(ship);
        trans.setToTranslation(-100,-250);
        g2d.transform(trans);
        g2d.fill(ship);
    }
    
    public static void main()
    {
        JFrame myFrame = new JFrame();
        myFrame.getContentPane().add(new SpaceInvaders());
        myFrame.setSize(new java.awt.Dimension(600,400));
        myFrame.setTitle("2D Animation Example");
        myFrame.setBackground(Color.black);
        myFrame.setVisible(true);
    }
}