Salam Bahagia,
Selamat bertemu kembali di halaman ini. Hari ini hari kedua kita tidak bertatap muka, So I very hope all of You keep fihgt and fun and more better than before.
As You know, last night I very difficult to take a bad. You know mosquito? that's a big problems.
All right guys.... let's do this!
Using Java with NetBeans, please create this task below.
We need Class Ball.java, BallControl.java and BounceBallApp.java
here is the code:
package Bola;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Polygon;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.Timer;
import javax.swing.JPanel;
/**
*
* @author ArtMasokan
*/
public class Ball extends JPanel {
private int delay = 50;
// Create a timer with delay 1000 ms
protected Timer timer = new Timer(delay, new TimerListener());
public int x = 0; private int y = 0; // Current ball position
private int radius = 5; // Ball radius
private int dx = 2; // Increment on ball's x-coordinate
private int dy = 2; // Increment on ball's y-coordinate
public Ball() {
timer.start();
}
private class TimerListener implements ActionListener {
/** Handle the action event */
public void actionPerformed(ActionEvent e) {
repaint();
}
}
protected void paintComponent(Graphics g) {
super.paintComponent(g);
g.setColor(Color.red);
// Check boundaries
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);
// Adjust ball position
x += dx;
y += dy;
g.fillOval(x - radius, y - radius, radius * 2, radius * 2);
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);
}
}
*****************
//
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.AdjustmentEvent;
import java.awt.event.AdjustmentListener;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.JScrollBar;
/**
*
* @author ArtMasokan
*/
public class BallControl extends JPanel {
private Ball ball = new Ball();
private JButton jbtStop = new JButton("Stop");
private JButton jbtResume = new JButton("Lanjut");
private JScrollBar jsbDelay = new JScrollBar();
public BallControl() {
// Group buttons in a panel
JPanel panel = new JPanel();
panel.add(jbtStop);
panel.add(jbtResume);
// Add ball and buttons to the panel
ball.setBorder(new javax.swing.border.LineBorder(Color.red));
//raga.setBorder(new javax.swing.border.LineBorder(Color.yellow));
jsbDelay.setOrientation(JScrollBar.HORIZONTAL);
ball.setDelay(jsbDelay.getMaximum());
setLayout(new BorderLayout());
add(jsbDelay, BorderLayout.NORTH);
add(ball, BorderLayout.CENTER);
add(panel, BorderLayout.SOUTH);
// Register listeners
jbtStop.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());
}
});
}
}
****************
package Bola;
import javax.swing.JApplet;
/**
*
* @author ArtMasokan
*/
public class BounceBallApp extends JApplet {
public BounceBallApp(){
add(new BallControl());
}
}
Setelah selesai, mohon hasil n code di upload di Blog masing-masing.
OK... CU
Untuk mengecek kehadiran kalian semua, mohon memberikan komentar di kolom Comment!
Makassar, 14 Oktober 2014.
