Kali ini saya akan memposting tentang tutorial membuat game bola pantul pada NetBiens.

Langsung saja ikuti langkah-langkah berikut!!

1.       Buka NetBeans anda

2.       Klik File, klik New Project, Klik Java, klik Java Aplication

3.       Buat Packages baru , beri nama games

4.       Di dalam package games buat 3 class yaitu: Ball.java , BallControl.java, BounceBallApp.java

Next:

·        Ketik Perintah di bawah ini pada class Ball.java

package games;

import javax.swing.Timer;

import java.awt.*;

import javax.swing.*;

import java.awt.event.*;

public class Ball extends JPanel {

    private int delay = 10;

    protected Timer timer = new Timer(delay, new TimerListener());

    private int x = 0;

    private int y = 0;

    private int radius = 3;

    private int dx = 10;

    private int dy = 10;

    public Ball() {

        timer.start();

    }

    private class TimerListener implements ActionListener {

        public void actionPerformed(ActionEvent e) {

            repaint();

        }

    }

    protected void paintComponent(Graphics g) {

        super.paintComponent(g);

        g.setColor(Color.red);

        if (x < radius) {

            dx = Math.abs(dx);

        }

        if (x > getWidth() - radius) {

            dx = -Math.abs(dx);

        }

        if (y < radius) {

            dy = Math.abs(dy);

        }

        if (y > getHeight() - radius) {

            dy = -Math.abs(dy);

        }

        x += dx;

        y += dy;

        g.fillOval(x - radius, y - radius, radius * 5, radius * 5);

        Polygon anu = new Polygon();

        anu.addPoint(0, 0);

        anu.addPoint(x - radius, y - radius);

        g.drawPolygon(anu);

    }

    public void suspend() {

        timer.stop(); // Suspend timer

    }

    public void resume() {

        timer.start(); // Resume timer

    }

    public void setDelay(int delay) {

        this.delay = delay;

        timer.setDelay(delay);

    }

}

·        Kemudian Ketik Perintah di bawah ini pada Class BallControl.java ;

package games;

import javax.swing.*;

import java.awt.event.*;

import java.awt.*;

public class BallControl extends JPanel {

private Ball ball = new Ball();

private JButton jbtSuspend = new JButton("Stop");

private JButton jbtResume = new JButton("Lanjut");

private JScrollBar jsbDelay = new JScrollBar();

public BallControl() {

JPanel panel = new JPanel();

panel.add(jbtSuspend);

panel.add(jbtResume);

ball.setBorder(new javax.swing.border.LineBorder(Color.red));

jsbDelay.setOrientation(JScrollBar.HORIZONTAL);

ball.setDelay(jsbDelay.getMaximum());

setLayout(new BorderLayout());

add(jsbDelay, BorderLayout.NORTH);

add(ball, BorderLayout.CENTER);

add(panel, BorderLayout.SOUTH);

jbtSuspend.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

ball.suspend();

}

});

jbtResume.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

ball.resume();

}

});

jsbDelay.addAdjustmentListener(new AdjustmentListener() {

public void adjustmentValueChanged(AdjustmentEvent e) {

ball.setDelay(jsbDelay.getMaximum() - e.getValue());

}

});

}

}

·       Dan terakhir masukkan kode di bawah ini pada Class BounceBallApp.java;

package games;

import java.awt.*;

import java.awt.event.*;

import java.applet.*;

import javax.swing.*;

public class BounceBallApp extends JApplet {

public BounceBallApp() {

add(new BallControl());

 }

}

·         Setelah itu klik kanan Class BounceBallApp, kemudian klik run;

Demikian postingan saya kali ini tentang belajar NetBeans, semoga bermanfaat untuk anda!