Inlägg

        try
        {
            while (q != null)
            {
                Circle c = (Circle)q.remove ();
                g2.setColor(c.getColor());
                g2.drawOval(ellipseX, ellipseY, 100, 100);
                
                ellipseX += 150;
            }
        }
        
        catch (QueueException e)
        {
            System.out.println ("Inga fler cirklar.\n" + e);
        }

public class Main
{
    public static void main(String[] args)
    {
        NyPanel panelen = new NyPanel ();
        NyRam ramen = new NyRam ("Bollar");

        ramen.add(panelen);
        ramen.setVisible(true);
    }
}

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.util.Random;
import java.util.ArrayList;

public class NyPanel extends JPanel implements ActionListener
{
    private Timer timern = new Timer (5, this);
    private double x = 0, y = 0, velX = 3, velY = 3;
    private Random farg = new Random ();
    private Color farger;
    private Ellipse2D cirkel;
    private ArrayList <Ellipse2D> bollar = new ArrayList <Ellipse2D> ();

    public NyPanel ()
    {
    }

    @Override
    public void paintComponent (Graphics gr)
    {
        super.paintComponent (gr);
        this.setBackground(Color.BLACK);

        Graphics2D g = (Graphics2D) gr;

        cirkel = new Ellipse2D.Double (x, y, 40, 40);
        g.setColor(farger);
        g.fill(cirkel);
        timern.start();
    }

    public void actionPerformed (ActionEvent e)
    {
        if (x < 0 || x > 755)
        {
            velX = -velX;
            skiftaFarger ();
        }
        if (y < 0 || y > 535)
        {
            velY = -velY;
            skiftaFarger ();
        }
        x += velX;
        y += velY;

        repaint ();
    }

    public void skiftaFarger ()
    {
        int rod = farg.nextInt (256);
        int gron = farg.nextInt (256);
        int bla = farg.nextInt (256);
        farger = new Color(rod, gron, bla);
    }
}

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;

public class NyPanel extends JPanel implements KeyListener, ActionListener
{
    private Graphics2D g;
    private double grader = 1;
    private Timer timern = new Timer (5, this);
    private double x = 0, y = 0, velX = 2, velY = 2;

    public NyPanel ()
    {
        this.addKeyListener (this);
        this.setFocusable (true);
        this.setFocusTraversalKeysEnabled (false);
    }

    @Override
    public void paintComponent (Graphics gr)
    {
        super.paintComponent (gr);
        this.setBackground(Color.BLACK);

        g = (Graphics2D) gr;

        Ellipse2D cirkel = new Ellipse2D.Double (x, y, 40, 40);
        g.fill(cirkel);
        timern.start();

        Rectangle2D rektangel0 = new Rectangle2D.Double (cirkel.getX (), cirkel.getY (), cirkel.getWidth (), cirkel.getHeight ());
        g.setPaint (Color.GREEN);
        g.draw (rektangel0);

        g.rotate (grader*(Math.PI/180), 400.0, 300.0);

        Rectangle2D rektangel = new Rectangle2D.Double (200.0, 250.0, 100.0, 40.0);
        g.setPaint (Color.DARK_GRAY);
        g.draw (rektangel);

        Rectangle2D rektangel2 = new Rectangle2D.Double (450.0, 250.0, 100.0, 40.0);
        g.setPaint (Color.DARK_GRAY);
        g.draw (rektangel2);

        Rectangle2D rektangel3 = new Rectangle2D.Double (350.0, 400.0, 100.0, 40.0);
        g.setPaint (Color.GRAY);
        g.draw (rektangel3);

        Rectangle2D rektangel4 = new Rectangle2D.Double (350.0, 100.0, 100.0, 40.0);
        g.setPaint (Color.GRAY);
        g.draw (rektangel4);

        if (rektangel0.intersects(rektangel))
        {

        }

        if (rektangel0.intersects(rektangel2))
        {
            
        }

        if (rektangel0.intersects(rektangel3))
        {

        }

        if (rektangel0.intersects(rektangel4))
        {

        }
    }

    public void actionPerformed (ActionEvent e)
    {
        if (x < 0 || x > 755)
        {
            velX = -velX;
        }
        if (y < 0 || y > 535)
        {
            velY = -velY;
        }
        x += velX;
        y += velY;
        repaint ();
    }
    
    public void vanster ()
    {
        grader -=5;
    }

    public void hoger ()
    {
        grader +=5;
    }

    public void keyPressed (KeyEvent e)
    {
        int kod = e.getKeyCode ();

        if (kod == KeyEvent.VK_LEFT)
            vanster ();
        else if (kod == KeyEvent.VK_RIGHT)
            hoger ();
        repaint ();
    }
    public void keyTyped (KeyEvent e)
    {
    }

    public void keyReleased (KeyEvent e)
    {
    }
}

        if (rektangel0.intersects(rektangel))
        {

        }

        if (rektangel0.intersects(rektangel2))
        {
            
        }

        if (rektangel0.intersects(rektangel3))
        {

        }

        if (rektangel0.intersects(rektangel4))
        {

        }

    public void actionPerformed (ActionEvent e)
    {
        if (x < 0 || x > 755)
        {
            velX = -velX;
        }
        if (y < 0 || y > 535)
        {
            velY = -velY;
        }
        x += velX;
        y += velY;
        repaint ();
    }