For your info, I got the code above from the following sources:
http://java.sun.com/develo
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Question
simple program example of Canvas
I have the code as below :
import javax.microedition.lcdui.*
import javax.microedition.midlet.
public class MyCanvas extends Canvas {
private MIDlet midlet;
public MyCanvas( MIDlet midlet ){
this.midlet = midlet;
}
protected void paint( Graphics g ){
g.setColor( 255, 255, 255 );
g.fillRect( 0, 0, getWidth(), getHeight() );
g.setColor( 0, 0, 0 );
g.drawString( "Hello there!", getWidth()/2, 0,
g.TOP | g.HCENTER );
}
}
I try to compile and run the code but receive the following error:
Canvas,Canvas
Exception: java.lang.ClassNotFoundExc
Canvas
What does it mean?
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by: redcoderPosted on 2006-02-20 at 13:33:15ID: 16003681
I then have a calling class to call the method in the canvas above:
import javax.microedition.midlet.
public class MyMIDlet extends MIDlet {
private Display display;
private MyCanvas canvas;
public MyMIDlet(){
display = Display.getDisplay( this );
canvas = new MyCanvas( this );
}
protected void startApp(){
display.setCurrent( canvas );
}
protected void pauseApp(){
}
protected void destroyApp( boolean unconditional ){
}
public void exit(){
destroyApp( true );
notifyDestroyed();
}
}
But still receive error as below:
C:\WTK22\apps\Canvas\src\M
symbol : class Display
location: class MyMIDlet
private Display display;
^
C:\WTK22\apps\Canvas\src\M
symbol : variable Display
location: class MyMIDlet
display = Display.getDisplay( this );
^