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                      1. 当前位置 : IT培训网 > Java开发 > Java培训 > Java多态面试题汇总含答案

                        Java多态面试题汇总含答案

                        时间:2018-12-17 15:03:48  来源:Java培训网  作者:IT培训网  已有:名学员访问该课程
                        本文IT培训网小编为大家整理汇总了,近年来比较常见且典型的Java多态面试题。当然,本次对面试题的总结整理,更加注重大家对于多态知识的掌握,而不仅仅只是对面试的应付。每道面试题后面都会附上相关问题的答案和分析,让大家充分理解相关知识点。

                        多态是同一个行为具有多个不同表现形式或形态的能力,它也是对象多种表现形式的体现。本文IT培训网天下棋牌下载小编为大家整理汇总了,近年来比较常见且典型的Java多态面试题。当然,本次对面试题的总结整理,更加注重大家对于多态知识的掌握,而不仅仅只是对面试的应付。每道面试题后面都会附上相关问题的答案和分析,让大家充分理解相关知识点。

                        Java多态面试题汇总含答案_wescliffe.com

                        1、Java ZHONGSHIXIANDUOTAIDEJIZHISHISHENME?

                        天下棋牌下载 KAODESHIFULEIHUOJIEKOUDINGYIDEYINYONGBIANLIANGKEYIZHIXIANGZILEIHUOJUTISHIXIANLEIDESHILIDUIXIANG,ERCHENGXUDIAOYONGDEFANGFAZAIYUNXINGQICAIDONGTAIBANGDING,JIUSHIYINYONGBIANLIANGSUOZHIXIANGDEJUTISHILIDUIXIANGDEFANGFA,YEJIUSHINEICUNLIZHENGZAIYUNXINGDENEIGEDUIXIANGDEFANGFA,ERBUSHIYINYONGBIANLIANGDELEIXINGZHONGDINGYIDEFANGFA。

                        2、JavaDUOTAIYOUSHENMEYOUSHI?

                        (1)KETIHUANXING(substitutability)。DUOTAIDUIYICUNZAIDAIMAJUYOUKETIHUANXING。LIRU,DUOTAIDUIYUANCircleLEIGONGZUO,DUIQITARENHEYUANXINGJIHETI,RUYUANHUAN,YETONGYANGGONGZUO。

                        (2)KEKUOCHONGXING(extensibility)。DUOTAIDUIDAIMAJUYOUKEKUOCHONGXING。ZENGJIAXINDEZILEIBUYINGXIANGYICUNZAILEIDEDUOTAIXING、JICHENGXING,YIJIQITATEXINGDEYUNXINGHECAOZUO。SHIJISHANGXINJIAZILEIGENGRONGYIHUODEDUOTAIGONGNENG。LIRU,ZAISHIXIANLEYUANZHUI、BANYUANZHUIYIJIBANQIUTIDEDUOTAIJICHUSHANG,HENRONGYIZENGTIANQIUTILEIDEDUOTAIXING。

                        (3)JIEKOUXING(interface-ability)。DUOTAISHICHAOLEITONGGUOFANGFAQIANMING,XIANGZILEITIGONGLEYIGEGONGTONGJIEKOU,YOUZILEILAIWANSHANHUOZHEFUGAITAERSHIXIANDE。

                        (4)LINGHUOXING(flexibility)。TAZAIYINGYONGZHONGTIXIANLELINGHUODUOYANGDECAOZUO,TIGAOLESHIYONGXIAOLV。

                        天下棋牌下载 (5)JIANHUAXING(simplicity)。DUOTAIJIANHUADUIYINGYONGRUANJIANDEDAIMABIANXIEHEXIUGAIGUOCHENG,YOUQIZAICHULIDALIANGDUIXIANGDEYUNSUANHECAOZUOSHI,ZHEIGETEDIANYOUWEITUCHUHEZHONGYAO。

                        天下棋牌下载 3、YUNXINGSHIDUOTAICUNZAIDEBIYAOTIAOJIANSHISHENME?

                        (1)YAOYOUJICHENG(BAOKUOJIEKOUDESHIXIAN);(2)YAOYOUZHONGXIE;(2)FULEIYINYONGZHIXIANGZILEIDUIXIANG。

                        天下棋牌下载 4、ANYAOQIUBIANXIEYIGEJavaYINGYONGCHENGXU:

                        天下棋牌下载 (1)DINGYIYIGELEI,MIAOSHUYIGEJUXING,BAOHANYOUZHANG、KUANLIANGZHONGSHUXINGHEJISUANMIANJIFANGFA。

                        天下棋牌下载 (2)BIANXIEYIGELEI,JICHENGZIJUXINGLEI,TONGSHIGAILEIMIAOSHUZHANGFANGTI,JUYOUZHANG、KUAN、GAOSHUXINGHEJISUANTIJIDEFANGFA。

                        (3)BIANXIEYIGECESHILEI,DUIYISHANGLIANGGELEIJINXINGCESHI,CHUANGJIANYIGEZHANGFANGTI,DINGYIQIZHANG、KUAN、GAO,SHUCHUQIDIMIANJIHETIJI。

                        SHILIDAIMARUXIA:

                        class Rectangle {

                        天下棋牌下载 double chang;

                        double kuan;

                        天下棋牌下载 Rectangle(double chang,double kuan){

                        this.chang = chang;

                        this.kuan = kuan;

                        }

                        double getArea(){

                        天下棋牌下载 return chang * kuan;

                        }

                        }

                        class Rectangular extends Rectangle{

                        天下棋牌下载 double gao;

                        Rectangular(double chang, double kuan,double gao) {

                        super(chang, kuan);

                        this.gao = gao;

                        }

                        double getVolume(){

                        return gao * getArea();

                        }

                        }

                        天下棋牌下载 class RectangleTest{

                        public static void main(String []args){

                        System.out.println("KAISHIZHIXING");

                        Rectangular rectangular = new Rectangular(15,12,5);

                        天下棋牌下载 System.out.println("ZHEISHITIJIJISUAN:" + rectangular.getVolume());

                        System.out.println("ZHEISHIMIANJIJISUAN:" + rectangular.getArea());

                        System.out.println("LINGYIZHONGSHILIHUAFANGSHI:");

                        System.out.println("ZHEISHIMIANJIJISUAN:" + new Rectangle(15,12).getArea());

                        System.out.println("ZHEISHITIJIJISUAN:" + new Rectangular(15,12,5).getVolume());

                        }

                        }

                        YUNXINGJIEGUO:

                        KAISHIZHIXING

                        天下棋牌下载 ZHEISHITIJIJISUAN:900.0

                        天下棋牌下载 ZHEISHIMIANJIJISUAN:180.0

                        天下棋牌下载 LINGYIZHONGSHILIHUAFANGSHI:

                        ZHEISHIMIANJIJISUAN:180.0

                        ZHEISHITIJIJISUAN:900.0

                        天下棋牌下载 Process finished with exit code 0

                        YISHANGJIUSHIJavaDUOTAIMIANSHITIHUIZONG,DAJIAYAOSHIMEIZUOCHULAIDEHUA,KEYIDUOKANKANCANKAODAAN。RUGUODUIJavaMIANSHIYOUHENDUOYIWEN,KEYISHANGITPEIXUNWANG,YOUGENGJIAZHUANYEDELAOSHIWEIDAJIATIGONGJIUYEZHIDAO。ZHUYUANDAJIADOUNENGNADAOoffer,ZHAODAOMANYIDEGONGZUO。

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