Image loading exception : Image « J2ME « Java Tutorial

1. Java Tutorial
2. J2ME
3. Image

import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;
import javax.microedition.midlet.MIDlet;

public class J2MEImmutableImageExample extends MIDlet {
  private Display display;

  private MyCanvas canvas;

  public J2MEImmutableImageExample() {
    display = Display.getDisplay(this);
    canvas = new MyCanvas(this);
  }

  protected void startApp() {
    display.setCurrent(canvas);
  }

  protected void pauseApp() {
  }

  protected void destroyApp(boolean unconditional) {
  }

  public void exitMIDlet() {
    destroyApp(true);
    notifyDestroyed();
  }

  class MyCanvas extends Canvas implements CommandListener {
    private Command exit;

    private J2MEImmutableImageExample immutableImageExample;

    private Image image = null;

    public MyCanvas(J2MEImmutableImageExample immutableImageExample) {
      this.immutableImageExample = immutableImageExample;
      exit = new Command("Exit", Command.EXIT, 1);
      addCommand(exit);
      setCommandListener(this);
      try {
        image = Image.createImage("/myImage.png");
      } catch (Exception error) {
        Alert alert = new Alert("Failure", "Cant open image file.", null, null);
        alert.setTimeout(Alert.FOREVER);
        display.setCurrent(alert);
      }
    }

    protected void paint(Graphics graphics) {
      if (image != null) {
        graphics.drawImage(image, 0, 0, Graphics.VCENTER | Graphics.HCENTER);
      }
    }

    public void commandAction(Command command, Displayable display) {
      if (command == exit) {
        immutableImageExample.exitMIDlet();
      }
    }
  }
}

31.35.Image
	31.35.1.	Draw image
	31.35.2.	Draw image to the bottom and right
	31.35.3.	Draw image to the center vertically and horizontally
	31.35.4.	Draw image with rectangle
	31.35.5.	Display big Image
	31.35.6.	Immutable image
	31.35.7.	Mutable Image
	31.35.8.	Image loading exception