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84 lines
2.5 KiB
84 lines
2.5 KiB
/**
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* 银行账户类
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* 包含账户号、户主姓名、余额三个属性
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*/
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public class BankAccount {
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// 私有属性，实现封装
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private final String accountNumber; // 账户号（final 修饰，创建后不可修改）
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private String ownerName; // 户主姓名（可以修改）
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private double balance; // 余额（只能通过存款和取款操作改变）
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/**
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* 构造方法：创建账户时必须提供账户号和户主姓名，初始余额为 0
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* @param accountNumber 账户号
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* @param ownerName 户主姓名
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*/
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public BankAccount(String accountNumber, String ownerName) {
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this.accountNumber = accountNumber;
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this.ownerName = ownerName;
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this.balance = 0.0; // 初始余额设为 0
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}
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/**
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* 存款操作
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* @param amount 存款金额
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*/
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public void deposit(double amount) {
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if (amount > 0) {
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balance += amount;
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System.out.println("存款成功！存入金额：" + amount + "元，当前余额：" + balance + "元");
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} else {
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System.out.println("存款失败！存款金额必须大于 0。");
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}
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}
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/**
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* 取款操作
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* @param amount 取款金额
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*/
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public void withdraw(double amount) {
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if (amount > 0) {
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if (amount <= balance) {
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balance -= amount;
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System.out.println("取款成功！取出金额：" + amount + "元，当前余额：" + balance + "元");
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} else {
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System.out.println("取款失败！余额不足，当前余额：" + balance + "元");
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}
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} else {
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System.out.println("取款失败！取款金额必须大于 0。");
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}
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}
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/**
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* 查询余额方法（只读，不允许直接修改余额）
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* @return 当前余额
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*/
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public double getBalance() {
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return balance;
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}
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/**
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* 获取账户号（只读）
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* @return 账户号
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*/
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public String getAccountNumber() {
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return accountNumber;
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}
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/**
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* 获取户主姓名
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* @return 户主姓名
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*/
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public String getOwnerName() {
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return ownerName;
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}
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/**
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* 设置户主姓名（可以修改）
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* @param ownerName 新的户主姓名
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*/
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public void setOwnerName(String ownerName) {
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this.ownerName = ownerName;
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System.out.println("户主姓名已修改为：" + ownerName);
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}
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}
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