Help! trying to create 'space invaders'

Question

hi. im a high school student with a little knowledge of java. im am currently working on a class assignment where each student has to create their own program. i decided to create the classic game of 'Space Invaders'. But i have a problem; i can't figure out how i will get the characters to move.
does anyone if there is a method that will allow the user to move a character? for example, in C++ there is a conio.h library that has a goto(x,y) function. is there one for java as well? thanks alot!

Answer 1

This is another way
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class Si extends JFrame
     Timer  ta;
     myView view = new myView();
public Si() 
     setBounds(3,10,765,350);
     addWindowListener(new WindowAdapter()
     {     public void windowClosing(WindowEvent ev)
          {     dispose();
               System.exit(0);
     getContentPane().add("Center",view);
     setVisible(true);
     ta = new Timer(45, new ActionListener()
     {     public void actionPerformed(ActionEvent e)
               view.move();
     ta.start();
public class myView extends JComponent 
     Point invs[]   = new Point[15];
     Color invc[]   = new Color[15];
     Color  color[] = new Color[]{
                    Color.blue,   Color.cyan, Color.green, Color.magenta,
                Color.orange, Color.pink, Color.red,   Color.yellow};
public myView()
     for (int p=0; p < invs.length; p++)
          int x = (int)(Math.random()*600)+33;
          int y = (int)(Math.random()*200)+33;
          invs[p] = new Point(x,y);
          int c = (int)(Math.random()*8);
           invc[p] = color[c];
public void move()
     for (int p=0; p < invs.length; p++)
          repaint(invs[p].x-1,invs[p].y-1,20,18);
          int x = (int)(Math.random()*3)-1;
          int y = (int)(Math.random()*3)-1;
          invs[p].translate(x,y);
          repaint(invs[p].x-1,invs[p].y-1,20,18);
public void paintComponent(Graphics g)
     super.paintComponent(g);
     Graphics2D g2 = (Graphics2D)g;
     g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON);          
     for (int p=0; p < invs.length; p++)
          g.setColor(invc[p]);
          g.fillOval(invs[p].x,invs[p].y,17,13);
public static void main (String[] args) 
     new Si();
}      Noah