This is an example for graphic test in J2ME. There are 2 files that will be created, MyCanvas.java and scrCanvas.java , have a nice try.
MyCanvas.java scriptimport javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class MyCanvas extends MIDlet implements CommandListener{
private Display display = null;
private scrCanvas scrCanvasObj = null;
private Command exit = new Command("EXIT",Command.EXIT,1);
private Command fullScreen = new Command("Full Screen",Command.OK,1);
public MyCanvas()
{
scrCanvasObj = new scrCanvas();
scrCanvasObj.addCommand(exit);
scrCanvasObj.addCommand(fullScreen);
scrCanvasObj.setCommandListener(this);
}
public void startApp() {
if(display == null)
{
display = Display.getDisplay(this);
display.setCurrent(scrCanvasObj);
}
}
public void pauseApp() {
}
public void destroyApp(boolean unconditional) {
}
public void commandAction(Command c,Displayable d)
{
if(c == exit)
{
notifyDestroyed();
destroyApp(true);
}
else if(c == fullScreen)
{
scrCanvasObj.setFullScreenMode(true);
}
}
}
Di bawah ini script scrCanvas.java
import javax.microedition.lcdui.*;
public class scrCanvas extends Canvas implements Runnable{
private int x = 0,y = 0;
private int ax = 1,ay = 1;
public scrCanvas()
{
Thread thread = new Thread(this);
thread.start();
}
private void backgroundHitam(Graphics g)
{
g.setColor(0x000000);
g.fillRect(0, 0, this.getWidth(), this.getHeight());
}
private void kotak(Graphics g)
{
g.setColor(0xff0000);
g.fillRect(x,y, 25,25);
}
private void tulisString(Graphics g)
{
g.setColor(0x00ff00);
g.drawString("Contoh Canvas", 1, 1, Graphics.LEFT | Graphics.TOP);
}
private void rubahPosisiKotak()
{
x+=ax;
y+=ay;
if(x<=0 || x+25>=this.getWidth())
ax*=-1;
if(y<=0 || y+25>=this.getHeight())
ay*=-1;
}
public void paint(Graphics g)
{
backgroundHitam(g);
tulisString(g);
kotak(g);
}
public void run()
{
while(true)
{
repaint();
rubahPosisiKotak();
try
{
Thread.sleep(1);
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
}
