//账户
public class Account {
private double balance;//账户余额
public Account(double init_balance){
balance = init_balance;
}
public double getBalance(){
return balance;
}
/**
* 存钱
* @param amt
*/
public void deposit(double amt){
balance += amt;
}
/**
* 取钱
* @param amt
* @return
*/
public boolean withdraw(double amt){
if(balance >= amt){
balance -= amt;
return true;
}else{
System.out.println("余额不足");
return false;
}
}
}
package banking04;
public class Customer {
private String firstName;
private String lastName;
private Account account;
public Customer(String f,String l){
firstName = f;
lastName = l;
}
public Account getAccount() {
return account;
}
public void setAccount(Account acct) {
account = acct;
}
public String getFirstName() {
return firstName;
}
public String getLastName() {
return lastName;
}
}
package banking04;
public class Bank {
//用于存放客户
private Customer[] customers;
//记录客户个数
private int numberOfCustomer;
public Bank(){
customers = new Customer[5];
}
//添加一个客户到数组中
public void addCustomer(String f,String l){
Customer cust = new Customer(f,l);
customers[numberOfCustomer] = cust;
numberOfCustomer++;
}
public Customer getCustomer(int index) {
return customers[index];
}
//获取客户的个数
public int getNumberOfCustomers() {
return numberOfCustomer;
}
}