mainscreen.java

手机Java开发教材的源代码：1.商用建构流程(WTK104)

import javax.microedition.lcdui.* ;
public class MainScreen extends List implements CommandListener
{
	private static Displayable instance ;
	synchronized public static Displayable getInstance()
	{
		if(instance == null)
			instance = new MainScreen() ;
		return instance ;
	}
	private MainScreen()
	{
		super("版权声明",IMPLICIT) ;
		append("开始",null) ;
		append("设定",null) ;
		append("版权声明",null) ;
		append("离开",null) ;
		setCommandListener(this) ;
	}
	public void commandAction(Command c,Displayable s)
	{
		String cmd = getString(getSelectedIndex()) ;
		Navigator.flow(cmd) ;
	}
}