封装一信息/实现隐藏 Balance Interface insterestytD Owner Client Deposit( Account number Withdraw Transfer( Deposit( Withdraw(i.] Transfer(.] Institute of Computer Software 2021/215 Nanjing University2021/2/5 Institute of Computer Software Nanjing University 14 封装—信息/实现隐藏 Interface Client Deposit() Withdraw() Transfer() Balance insterestYTD Owner Account_number Deposit() {…} Withdraw() {…} Transfer() {…}