package com.imooc;public class Telphone {? private float screen;? private float cpu;? private float mem;??? public void sendMessage(){ ?System.out.println("sendMessage");? }??? public float getScreen() { return screen;}public void setScreen(float screen) { this.screen = screen;// this.sendMessage();}public float getCpu() { return cpu;}public void setCpu(float cpu) { this.cpu = cpu;}public float getMem() { return mem;}public void setMem(float mem) { this.mem = mem;}public Telphone(){ ?System.out.println("無參的構造方法執行了!");? }? public Telphone(float newScreen,float newCpu,float newMem){ if(newScreen<3.5f){ System.out.println("你輸入的參數有問題,自動賦值3.5"); screen = 3.5f;? }else{ screen = newScreen; } ?screen = newScreen; cpu = newCpu; mem = newMem; System.out.println("有參的構造方法執行了!");? }}我加黑的部分 ? 為什么沒有輸出, ?希望有人能為我解答一下,謝謝