A simple J2ME app

HelloWorld.java

package hello;

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class HelloWorld extends MIDlet implements CommandListener {

    private Display display;
    private TextField field;
    private String name;
    private TextField greeting;
    private Command writeName;
    private Form form;

    public HelloWorld() {
        form = new Form("My first form");
        field = new TextField("Tell me your name: ", "", 30, TextField.ANY);
        form.append(field);
        greeting = new TextField("", "Hello, person!", 30, TextField.UNEDITABLE);
        form.append(greeting);
        writeName = new Command("What's my name?", Command.OK, 0);
        form.addCommand(writeName);
        form.setCommandListener(this);
        display = Display.getDisplay(this);
        display.setCurrent(form);
    }

    public void startApp() {
    }

    public void pauseApp() {
    }

    public void destroyApp(boolean unconditional) {
    }

    public void commandAction(Command c, Displayable s) {
        if (c.getCommandType() == Command.OK) {
            name = field.getString();
            writeName(name);
        }
    }

    private void writeName(String name) {
        greeting.setString("Hello, " + name + "!");
    }

}