Making new Images

Question

Im making a game and when you click a button and then click on the screen it makes a new tower. At first when you click the tower will show up where you clicked, but if you try to make a second tower and you click on the screen the first tower is deleted and the second tower is drawn where you clicked. I know why it dose this and I know how I COULD fix it but it would take a lot of programming and I would only be able to make a certain amount of towers. So I was wondering how can I fix it so that it wont delete the first tower?
Here is the code that I have so far:
import java.awt.Color;
import java.awt.Container;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.Timer;
import java.util.TimerTask;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class Defense extends JPanel implements MouseListener{
     Timer update;
     static JFrame dframe = new JFrame("Battle!");
     static BufferedImage map1,rgtower;
     static JButton regtower = new JButton();
     static ImageIcon rgticon = new ImageIcon("imgs/rgtower.png");
     static boolean placetower,drawtower,drawwarning = false;
     static Graphics g;
     Font font = new Font("Arial",Font.PLAIN,30);
     int x,y = 0;
     static Container dcontain = dframe.getContentPane();
     public static void defGUI(){
          dcontain.add(regtower);
          dcontain.add(new Defense());
          regtower.setBounds(645,100,100,50);
          regtower.setIcon(rgticon);
          regtower.setBorder(null);
          regtower.setFocusable(false);
          regtower.addActionListener(new buttonlist());
          dframe.setSize(800,600);
          dframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          dframe.setResizable(false);
          dframe.setVisible(true);
          try {
               map1 = ImageIO.read(new File("imgs/map1.png"));
               rgtower = ImageIO.read(new File("imgs/rgtower.png"));
          } catch (IOException e) {
               e.printStackTrace();
     public void paintComponent(Graphics g){
          super.paintComponent(g);
          g.drawImage(map1,0,0,null);
          if(drawwarning == true){
               g.setFont(font);
               g.setColor(Color.black);
               g.drawString("Cant Place it there!",300,50);
          g.create(x, y, 40, 40);
          g.drawImage(rgtower,x,y,40,40,null);
     public Defense(){
          UTimer task = new UTimer(this);
          update = new Timer();
          update.scheduleAtFixedRate(task,0,5);
          this.addMouseListener(this);
          this.setOpaque(false);
          dframe.repaint();
          System.gc();
     class UTimer extends TimerTask{
          private Defense def;
          public UTimer(Defense def){
               this.def = def;
          public void run(){
               def.repaint();
               dcontain.repaint();
     public void mouseClicked(MouseEvent e) {
          if(placetower == true){
               if(e.getX() >= 590){
                    drawwarning = true;
               }else{
                    drawwarning = false;
                    placetower = false;
                    x = e.getX()-25;
                    y = e.getY()-25;
     public void mouseEntered(MouseEvent arg0) {}
     public void mouseExited(MouseEvent arg0) {}
     public void mousePressed(MouseEvent arg0) {}
     public void mouseReleased(MouseEvent arg0) {}
}

Answer 1

BigDaddyLoveHandles wrote:
That wasn't that hard, was it? An array would work, but a list would be easier, wouldn't it?Oh well im not sure how to use a list but I could figure it out. Thanks for the help! Could you give me a sample code that would get that to work? You don't have to though lol.