mytest3.java

Java的实用文件程序 运用命令行演示通过了调试

package mytest3;

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

public class mytest3 extends MIDlet implements CommandListener {
	Display display;
	Form frm = new Form("lianxi");
	Command cmd1 = new Command("open",Command.OK,0);
	Command cmd2 = new Command("cancel",Command.EXIT,1);
    Command cmd3 = new Command("back",Command.BACK,0);
    

	public mytest3() {
		super();
		// TODO 自动生成构造函数存根
	}

	protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
		// TODO 自动生成方法存根

	}

	protected void pauseApp() {
		// TODO 自动生成方法存根

	}

	protected void startApp() throws MIDletStateChangeException {
		display = Display.getDisplay(this);
		System.out.println(display.numColors());
		System.out.println(display.isColor());
		
		frm.addCommand(cmd1);
		frm.addCommand(cmd2);
		frm.addCommand(cmd3);
		frm.setCommandListener(this);
	    display.setCurrent(frm);
		// TODO 自动生成方法存根

	}
	public void commandAction(Command c,Displayable d){
		if(c == cmd1)
		notifyDestroyed();
		if(c == cmd2)
		frm.append(c.getLabel()+"按下");
		else
		frm.append(c.getLabel()+"按下");
			
				
	}

}