说明：  创建一个TestBanking类，并在其main方法中添加若干储户和帐号，然后模拟存款、取款业务，并最终输出一张完整的报表。
(Create a TestBanking class, and its main method to add the number of depositors and account, and then simulate deposits, withdrawals, business, and ultimately output a complete report. )