The selection cannot be launched ,and there are no recent launches无法启动选择，并且没有最近的启动(问题出现在哪里)
package com.imooc;
public class Telphone {
float screen;
float cpu;
float mem;
void call() {
System.out.println("telphone有打电话的功能");
}
void sendMessage() {
System.out.println("screen:"+screen+"cpu:"+cpu+"mem:"+mem+"Telphone有发短信的功能！");
}
}
