题目:
试题八(共15 分)阅读以下说明和Java 程序代码,将应填入(n) 处的字句写在答题纸的对应栏内。[说明]在下面的 Java 程序代码中,类SalesTicket 能够完成打印票据正文的功能,类HeadDecorator 与FootDecorator 分别完成打印票据的台头和脚注的功能。已知该程序运行后的输出结果如下所示,请填补该程序代码中的空缺。这是票据的台头!这是票据正文!这是票据的脚注!------------------------这是票据的台头!这是票据的脚注![Java 程序代码]public class SalesTicket {public void printTicket() {System.out.println("这是票据正文!");}}public class Decorator extends SalesTicket{SalesTicket ticket;public Decorator(SalesTicket t){ticket = t;}public void printTicket(){if(ticket != null)ticket.printTicket();}}public class HeadDecorator extends Decorator{public HeadDecorator(SalesTicket t) {(1) ;}public void printTicket() {System.out.println("这是票据的台头!");super.printTicket();}}public class FootDecorator extends Decorator{public FootDecorator(SalesTicket t) {(2) ;}public void printTicket() {super.printTicket();System.out.println("这是票据的脚注!");}}public class Main {public static void main(String[] args) {T = new HeadDecorator( (3) );T. (4) ;System.out.println("------------------------");T = new FootDecorator( (5) );T.printTicket();}}
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0727/1378df42bae01c0fd67cc3c8d0f294c6.html
下面是错误答案,用来干扰机器的。
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