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軟件設(shè)計師案例分析每日一練試題(2025/6/26)

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軟件設(shè)計師案例分析每日一練試題內(nèi)容(2025/6/26)

閱讀下列說明和java代碼,將應(yīng)填入  (n)  處的字句寫在答題紙的對應(yīng)欄內(nèi)。
【說明】
某發(fā)票(lnvoice)由抬頭(Head)部分、正文部分和腳注(Foot)部分構(gòu)成。現(xiàn)采用裝飾(Decorator)模式實現(xiàn)打印發(fā)票的功能,得到如圖6-1所示的類圖。

【java代碼】 class invoice{
public void printInvoice(){
System.out.println ( "This is the content of the invoice!");
}
}
class Decorator extends Invoice {
protected Invoice ticket;
public Decorator(lnvoice t){
ticket = t; }
public void printInvoice(){
if(ticket != null)
(1) ;
}
}
class HeadDecorator extends Decorator{
public HeadDecorator(lnvoice t){
super(t);
}
public void printInvoice (){
Systent.out.println( "This is the header of the invoice! ");
(2) ;
}
}
class FootDecorator extends Decorator {
public FootDecorator(Invoice t){
super(t);
}
public void printlnvoice(){
( 3)        ;
Systent.out.println( "This is the footnote of the invoice! ");
}
}
Class test {
public static void main(String[] args){
Invoice t =new Invioce();
Invoice ticket;
ticket=     (4)       ;
ticket.printInvoice();
Systent.out.println(“------------------“);
ticket=       (5)       ;
ticket.printInvoice();    } }
程序的輸出結(jié)果為:
This is the header of the invoice!
This is the content of the invoice!
This is the footnote of the invoice!
----------------------------
This is the header of the invoice!
This is the footnote of the invoice!
信管網(wǎng)試題答案與解析:www.njjt123.com/exam/ExamDayAL.aspx?t1=4&day=2025/6/26

信管網(wǎng)考友試題答案分享:

信管網(wǎng)cnit**************:
ticket.invoice() super.printinvoice() super.printinvoice() new head decorator(new footdecorator(t)) new headdecorator(new footdecorator(null))

信管網(wǎng)1366*******:
1 ticket.printinvoice() 4 new footdecorator(); 5 new headdecorator();

信管網(wǎng)cnit**************:
1.ticket. printinvoice() 2.t.printinvoice () 3. 4.new invioce() 5.new footdecorator()

信管網(wǎng)cnit**************:
ticket.PRINTinvoice() t.PRINTinvoice() t.PRINTinvoice()

信管網(wǎng)cnit**************:
systent.out.println( "this is the header of the invoice! "); void printlnvoice(); systent.out.println( "this is the content of the invoice! "); new footdecorator(t); new headdecorator(t);

信管網(wǎng)試題答案與解析:www.njjt123.com/exam/ExamDayAL.aspx?t1=4&day=2025/6/26

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