Now, I know that this has been asked, but I need to know how to do this NOT on html or anything. Heres my code, not including all of the other java files.

package rtype;

import java.awt.Image;
import java.awt.event.KeyEvent;

import java.util.ArrayList;

import javax.swing.ImageIcon;

public class aa {
private int xd;
private int yd;
private int dx;
private int dy;
private int x;
private int y;
private Image image;

private ArrayList missiles;

private final int CRAFT_SIZE = 70;

public aa() {
    ImageIcon ii = new ImageIcon(this.getClass().getResource("/aa.png"));
    image = ii.getImage();
    missiles = new ArrayList();
    x = 10;
    y = 10;
    xd = -14;
    yd = 140;
}


public void move() {
    if(y >=xd)
        y += dx;
    else if(y < xd)
        y += 1;
    if(y <=yd)
        y += dy;
    else if(y > yd)
        y += -1;
}

public int getX() {
    return x;
}

public int getY() {
    return y;
}

public Image getImage() {
    return image;
}

public ArrayList getMissiles() {
    return missiles;
}

public void keyPressed(KeyEvent e) {

    int key = e.getKeyCode();

    if (key == KeyEvent.VK_SPACE) {
        fire();
    }

    if (key == KeyEvent.VK_UP) {
        dy = -1;
    }

    if (key == KeyEvent.VK_DOWN) {
        dy = 1;
    }

    if (key == KeyEvent.VK_RIGHT) {
        yd++;
    }

    if (key == KeyEvent.VK_LEFT) {
        yd--;
    }

    if (key == KeyEvent.VK_W) {
        xd++;
    }

    if (key == KeyEvent.VK_S) {
        xd--;
    }
}

public void fire() {
    try{
    missiles.add(new Missle(x + CRAFT_SIZE, y + CRAFT_SIZE));
    }catch(Exception e){}
}

public void keyReleased(KeyEvent e) {
    int key = e.getKeyCode();

    if (key == KeyEvent.VK_UP) {
        dy = 0;
    }

    if (key == KeyEvent.VK_DOWN) {
        dy = 0;
    }
}
}

So, at the method, fire(), I want to make it delay between shots. HOW?

sorry if this is n00bish