資源簡(jiǎn)介
請(qǐng)用Java面向?qū)ο笳Z言,利用簡(jiǎn)單工廠模式,實(shí)現(xiàn)簡(jiǎn)易計(jì)算器程序(加減乘除功能)。
在注釋中回答以下問題:
1、 軟件設(shè)計(jì)目標(biāo)分別是什么?
2、 在相應(yīng)的代碼處解釋設(shè)計(jì)目標(biāo)實(shí)現(xiàn)的方式。

代碼片段和文件信息
package?calculator;
//加法
public?class?Add?{
public?int?getRel(int?i1int?i2){
return?i1+i2;
}
}
?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-03-28?10:10??calculator\
?????文件?????????301??2018-03-14?11:10??calculator\.classpath
?????文件?????????386??2018-03-14?10:39??calculator\.project
?????目錄???????????0??2018-03-28?10:10??calculator\.settings\
?????文件?????????598??2018-03-14?11:10??calculator\.settings\org.eclipse.jdt.core.prefs
?????目錄???????????0??2018-03-28?10:10??calculator\bin\
?????目錄???????????0??2018-03-28?10:10??calculator\bin\calculator\
?????文件?????????367??2018-03-21?11:48??calculator\bin\calculator\Add.class
?????文件????????1623??2018-03-21?11:48??calculator\bin\calculator\Calculator.class
?????文件?????????402??2018-03-21?11:48??calculator\bin\calculator\Div.class
?????文件????????1068??2018-03-21?11:48??calculator\bin\calculator\Input.class
?????文件?????????367??2018-03-21?11:48??calculator\bin\calculator\Mul.class
?????文件?????????131??2018-03-14?12:09??calculator\bin\calculator\operate.class
?????文件?????????367??2018-03-21?11:48??calculator\bin\calculator\Sub.class
?????目錄???????????0??2018-03-28?10:10??calculator\src\
?????目錄???????????0??2018-03-28?10:10??calculator\src\calculator\
?????文件?????????107??2018-03-21?11:48??calculator\src\calculator\Add.java
?????文件?????????825??2018-03-21?11:48??calculator\src\calculator\Calculator.java
?????文件?????????133??2018-03-21?11:48??calculator\src\calculator\Div.java
?????文件?????????516??2018-03-21?11:48??calculator\src\calculator\Input.java
?????文件?????????107??2018-03-21?11:48??calculator\src\calculator\Mul.java
?????文件??????????90??2018-03-14?12:09??calculator\src\calculator\operate.java
?????文件?????????107??2018-03-21?11:48??calculator\src\calculator\Sub.java
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