练习6

package com.atguigu.exercise2;
public class CustomerTest {
    public static void main(String[] args) {
  Customer cust = new Customer("Jane","Smith");
  Account acct = new Account(1000,2000,0.0123);
  cust.setAccount(acct);
  //存取操作
  //cust.getAccount();
  acct.deposit(100);//存钱
  acct.withdraw(960);//取钱
  acct.withdraw(2000);//取钱
    }
}

package com.atguigu.exercise2;
public class Account {
    //属性
    private int id;//账号
    private double balance;//余额
    private double annuallnterestRate;//年利率
    //构造器
    public Account(int id, double balance, double annuallnterestRate){
  this.id = id;
  this.balance = balance;
  this.annuallnterestRate = annuallnterestRate;
    }
    //方法
    public int getId() {
  return id;
    }
    public double getBalance() {
  return balance;
    }
    public double getAnnuallnterestRate() {
  return annuallnterestRate;
    }
    public void setId(int id) {
  this.id = id;
    }
    public void setBalance(double balance) {
  this.balance = balance;
    }
    public void setAnnuallnterestRate(double annuallnterestRate) {
  this.annuallnterestRate = annuallnterestRate;
    }
    public void withdraw(double amount){ //取钱
  if(balance <  amount){
      System.out.println("余额不足,取款失败！");
      return;
  }
  balance -= amount;
  System.out.println("成功取出:"+amount);
    }
    public void deposit(double amount){ //存钱
  if(amount > 0){
      balance += amount;
      System.out.println("成功存入:" + amount);
  }else{
      System.out.println("存款失败！");
  }
    }
}

package com.atguigu.exercise2;
public class Customer {
    //属性
    private String firstName;
    private String lastName;
    private Account account;
    //构造器
    public Customer(String f, String l){
  this.firstName = f;
  this.lastName = l;
    }
    //方法
    public String getfirstName(){
  return firstName;
    }
    public String getlastName(){
  return lastName;
    }
    public Account getAccount(){
  return account;
    }
    public void setAccount(Account account){
    }
}