class Untitled {public static void main(String[] args) {Customer tom=new Customer("tom","1000",2000,0.05);tom.Ac.deposit(2000);} }class Customer{//用戶類private String name;//姓名Account Ac;//賬戶public Customer(){}//缺省構造public Customer(String name,String iD,double balance,double annualInterestRate){this.name = name;this.Ac = new Account(iD,balance,annualInterestRate);//賬戶對象屬性初始化} }class Account{//賬戶類private String iD;//賬戶iDprivate double balance;//余額private double annualInterestRate;//年利率public Account(){}//缺省構造public Account(String iD,double balance,double annualInterestRate){this.iD = iD;this.balance = balance;this.annualInterestRate = annualInterestRate;}public void setiD(String iD){//設置iDthis.iD=iD;}public void getiD(){System.out.println("iD:"+this.iD);//查看iD}public void setbalance(double balance){//設置賬戶金額this.balance=balance;}public void getbalance(){System.out.println("balance:"+this.balance);//查看賬戶金額}public void setannualInterestRate(double annualInterestRate){//設置年利率this.annualInterestRate = annualInterestRate;}public void getannualInterestRate(){System.out.println("annualInterestRate:"+this.annualInterestRate);//查看年利率}public void deposit(double demoney){//存款this.balance += demoney;System.out.println("存款成功，當前余額為："+this.balance);}public void withdraw(double wdmoney){//取款if(this.balance >= wdmoney){this.balance -= wdmoney;System.out.println("取款成功，當前余額為："+this.balance);}else{System.out.println("余額不足，取款失敗");}} }

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