helloworld.java

j2me开发的一些例子

/*
 * Copyright 2000-2001 by Sun Microsystems, Inc.,
 * 901 San Antonio Road, Palo Alto, California, 94303, U.S.A.
 * All rights reserved.
 */

package examples.helloworld;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class HelloWorld extends MIDlet implements CommandListener {
    private Command exitCommand;
    private TextBox tb;

    public HelloWorld() {
        exitCommand = new Command("Exit", Command.EXIT, 1);
        tb = new TextBox("Hello MIDlet", "Hello, World!", 15, 0);
        tb.addCommand(exitCommand);
        tb.setCommandListener(this);
    }

    protected void startApp() {
        Display.getDisplay(this).setCurrent(tb);
    }

    protected void pauseApp() {}
    protected void destroyApp(boolean u) {}

    public void commandAction(Command c, Displayable d) {
        if (c == exitCommand) {
            destroyApp(false);
            notifyDestroyed();
        }
    }
}