Java by API/javax.microedition.lcdui/Image

Image: createImage(String name) throws IOException

 

import java.io.IOException;
import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.AlertType;
import javax.microedition.lcdui.rumand;
import javax.microedition.lcdui.rumandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.List;
import javax.microedition.midlet.MIDlet;
public class J2METravelList extends MIDlet implements CommandListener {
  private List mList;
  private Command mExitCommand, mNextCommand;
  public J2METravelList() {
    String[] stringElements = { "A", "C", "H" };
    Image[] imageElements = { loadImage("/a.png"), loadImage("/c.png"),
        loadImage("/h.png") };
    mList = new List("Reservation type", List.IMPLICIT, stringElements, imageElements);
    mNextCommand = new Command("Next", Command.SCREEN, 0);
    mExitCommand = new Command("Exit", Command.EXIT, 0);
    mList.addCommand(mNextCommand);
    mList.addCommand(mExitCommand);
    mList.setCommandListener(this);
  }
  public void startApp() {
    Display.getDisplay(this).setCurrent(mList);
  }
  public void commandAction(Command c, Displayable s) {
    if (c == mNextCommand || c == List.SELECT_COMMAND) {
      int index = mList.getSelectedIndex();
      Alert alert = new Alert("Your selection", "You chose " + mList.getString(index) + ".", null,
          AlertType.INFO);
      Display.getDisplay(this).setCurrent(alert, mList);
    } else if (c == mExitCommand)
      notifyDestroyed();
  }
  public void pauseApp() {
  }
  public void destroyApp(boolean unconditional) {
  }
  private Image loadImage(String name) {
    Image image = null;
    try {
      image = Image.createImage(name);
    } catch (IOException ioe) {
      System.out.println(ioe);
    }
    return image;
  }
}

Image: getGraphics()

 

import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.rumand;
import javax.microedition.lcdui.rumandListener;
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 J2MEMutableImageExample extends MIDlet {
  private Display display;
  private MyCanvas canvas;
  public J2MEMutableImageExample() {
    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 J2MEMutableImageExample mutableImageExample;
    private Image image = null;
    public MyCanvas(J2MEMutableImageExample mutableImageExample) {
      this.mutableImageExample = mutableImageExample;
      exit = new Command("Exit", Command.EXIT, 1);
      addCommand(exit);
      setCommandListener(this);
      try {
        image = Image.createImage(70, 70);
        Graphics graphics = image.getGraphics();
        graphics.setColor(255, 0, 0);
        graphics.fillArc(10, 10, 60, 50, 180, 180);
      } catch (Exception error) {
        Alert alert = new Alert("Failure", "Creating Image", null, null);
        alert.setTimeout(Alert.FOREVER);
        display.setCurrent(alert);
      }
    }
    protected void paint(Graphics graphics) {
      if (image != null) {
        graphics.setColor(255, 255, 255);
        graphics.fillRect(0, 0, getWidth(), getHeight());
        graphics.drawImage(image, 30, 30, Graphics.VCENTER | Graphics.HCENTER);
      }
    }
    public void commandAction(Command command, Displayable display) {
      if (command == exit) {
        mutableImageExample.exitMIDlet();
      }
    }
  }
}