Files
jvm_emulator/Hello.java
T
2026-03-30 19:20:11 +00:00

41 lines
1.1 KiB
Java

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class Hello extends MIDlet {
private Display display;
private MyCanvas canvas;
public void startApp() {
canvas = new MyCanvas();
display = Display.getDisplay(this);
display.setCurrent(canvas);
System.out.println("Hello J2ME!");
}
public void pauseApp() {}
public void destroyApp(boolean unconditional) {}
}
class MyCanvas extends Canvas {
protected void paint(Graphics g) {
// Clear screen (black background)
g.setColor(0, 0, 0);
g.fillRect(0, 0, getWidth(), getHeight());
// Draw a red rectangle
g.setColor(255, 0, 0);
g.fillRect(20, 20, 80, 40);
// Draw a green line
g.setColor(0, 255, 0);
g.drawLine(0, 0, getWidth(), getHeight());
// Draw white text
g.setColor(255, 255, 255);
g.drawString("Hello J2ME!", 10, 80, Graphics.TOP | Graphics.LEFT);
// Draw a blue circle (approximated with drawArc)
g.setColor(0, 0, 255);
g.drawArc(100, 100, 50, 50, 0, 360);
}
}