package com.imooc;public class Telphone {private float screen;private float cpu;private float mem;public float getScreen(){return screen;}public void setScreen(float newScreen){screen = newScreen;}public Telphone(){System.out.println("無(wú)參的構(gòu)造方法執(zhí)行了！");}public Telphone(float newScreen, float newCpu, float newMem){//構(gòu)造方法確保賦給成員的變量的值是一個(gè)合理值if(newScreen<3.5f){System.out.println("您輸入的參數(shù)有問(wèn)題，自動(dòng)賦值3.5");screen = 3.5f;}else{screen = newScreen;}cpu = newCpu;mem = newMem;System.out.println("有參的構(gòu)造方法執(zhí)行了！");} } package com.imooc;public class InitialTelphone {public static void main(String[] args) {// TODO Auto-generated method stub//通過(guò)無(wú)參的構(gòu)造方法可以創(chuàng)建對(duì)象Telphone phone1 = new Telphone();//通過(guò)有參的構(gòu)造方法可以創(chuàng)建對(duì)象，并給對(duì)象的實(shí)例變量賦初值Telphone phone2 = new Telphone(1.5f, 1.4f, 2.2f);//通過(guò)setter方法修改變量的值phone1.setScreen(5.0f);//通過(guò)getter方法獲取變量的值System.out.println("screen:" + phone1.getScreen()); }}

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轉(zhuǎn)載于:https://www.cnblogs.com/100thMountain/p/5374591.html

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