package banking2;
public class Account {
private double balance;//账户余额。
public Account(double init_balance) {
// TODO Auto-generated constructor stub
balance = init_balance;
}
public double getBalance(){
return balance;
}
public void deposit(double amt){
balance += amt;
}
public void withdraw(double amt){
if(balance >= amt){
balance -= amt;
}else{
System.out.println("余额不足！");
}
}
}
package banking2;
public class Customer {
private String firstName;
private String lastName;
private Account account;
public Customer(String f,String l){
firstName = f;
lastName = l;
}
public String getFirstName(){
return firstName;
}
public String getLastName(){
return lastName;
}
public Account getAccount(){
return account;
}
public void setAccount(Account acct){
account = acct;
}
}
package testbanking;
/*
* This class creates the program to test the banking classes.
* It creates a new Bank, sets the Customer (with an initial balance),
* and performs a series of transactions with the Account object.
*/
import banking2.Customer;
import banking2.Account;
public class TestBanking2 {
public static void main(String[] args) {
Customer customer;
Account account;
// Create an account that can has a 500.00 balance.
account = new Account(500.00);
System.out.println("Creating the customer Jane Smith.");
customer = new Customer("Jane","Smith");
customer.setAccount(account);
//code
System.out.println("Creating her account with a 500.00 balance.");
//code
customer.getAccount().withdraw(150.00);
System.out.println("Withdraw 150.00");
//code
customer.getAccount().deposit(22.50);
System.out.println("Deposit 22.50");
//code
customer.getAccount().withdraw(47.62);
System.out.println("Withdraw 47.62");
//code
// Print out the final account balance
System.out.println("Customer [" + customer.getLastName()
+ ", " + customer.getFirstName()
+ "] has a balance of " + customer.getAccount().getBalance());
}
}
时间： 2024-07-31 11:21:44