TJUTjava实验3银行业务管理

上传者: qq812559558 | 上传时间: 2019-12-21 20:31:02 | 文件大小: 13KB | 文件类型: zip
某银行有许多储户,每个储户可以拥有一个或多个帐号。现要求你开发一个软件,管理银行储户与帐号业务。 Bank类中有一个customers集合,用来存储所有的Customer(储户)对象,addCustomer方法用于向该集合中加储户,getCustomer方法根据下标值取某个储户,getNumOfCustomers方法取储户总数,getCustomers方法返回储户的Iterator,以便获得每个储户对象。 Customer类有一个accounts集合,用来存储某个储户的所有Account(帐号)对象,addAccount方法用于向该集合中加帐号,getAccount方法根据下标值取该储户的某个帐号,getNumOfAccounts方法取该储户的帐号总数,getAccounts方法返回该储户的帐号的Iterator,以便获得每个帐号对象。 Account类是抽象类,有一个balance属性,代表余额。deposit方法表示存款,amount参数是存款额。withdraw方法表示取款,取款额amount如果超出了余额就会抛出透支异常,我们需要自己定义一个OverdraftException类来表示这个异常,当抛出透支异常时,不进行取款交易,并报告用户此项错误。

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