helloworld.java

来自「javaME useful code with the J2ME helpful」· Java 代码 · 共 38 行

import javax.microedition.lcdui.*;

import javax.microedition.midlet.*;

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!", 12, 0);
		tb.addCommand(exitCommand);
		tb.setCommandListener(this);
	}
	protected void startApp() throws MIDletStateChangeException {
		Display.getDisplay(this).setCurrent(tb);
		System.out.println("startApp");
	}
	protected void pauseApp() {
		System.out.println("pauseApp");
	}
	protected void destroyApp(boolean c) throws MIDletStateChangeException {
		System.out.println("destroyApp");
	}
	public void commandAction(Command c, Displayable d) {
		if (c == exitCommand) {
			try {
				destroyApp(false);
			} catch (MIDletStateChangeException exception) {
				System.out.println("MIDletStateChangeException");
			}
			notifyDestroyed();
		}
	}
}