display获取相关信息

import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Form;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;


public class Hello extends MIDlet {
	
	private Display display=Display.getDisplay(this);
	
	Form form=null;
	
	public Hello(){
		super();
		form=new Form("Form title");
		form.append("i am waitting for you!");
		
		
	}

	protected void startApp() throws MIDletStateChangeException {
		// TODO Auto-generated method stub
		display=Display.getDisplay(this);
		
		//获取版本信息
		form.append("版本信息："+System.getProperty("microedition.edition"));
		
		//获取主机平台
		form.append("主机平台："+System.getProperty("microedition.platform"));
		
		//获取字符编码
		form.append("字符编码："+System.getProperty("microedition.encoding"));
		
		//获取配置信息
		form.append("配置信息："+System.getProperty("microedition.configuration"));
		
		//获取简表
		form.append("简表："+System.getProperty("microedition.profiles"));
		
		//当前时区
		form.append("当前时区："+System.getProperty("microedition.local"));
		
		//内存信息
		Runtime runtime=Runtime.getRuntime();
		form.append("总内存"+runtime.totalMemory());
		form.append("闲置内存："+runtime.freeMemory());
		
		display.setCurrent(form);
		
	

	}
	protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
		// TODO Auto-generated method stub

	}

	protected void pauseApp() {
		// TODO Auto-generated method stub

	}

	

}