From a9e58175bec45ef223e325cabc143e3bcb5949ab Mon Sep 17 00:00:00 2001
From: jingjiaying <hndxdsjjy@163.com>
Date: Mon, 16 Mar 2026 23:39:29 +0800
Subject: [PATCH] =?UTF-8?q?=E5=AE=8C=E6=88=90BankAccount=E4=BD=9C=E4=B8=9A?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 BankAccount/src/BankAccount.java | 53 ++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 BankAccount/src/BankAccount.java

diff --git a/BankAccount/src/BankAccount.java b/BankAccount/src/BankAccount.java
new file mode 100644
index 0000000..2c2d6a8
--- /dev/null
+++ b/BankAccount/src/BankAccount.java
@@ -0,0 +1,53 @@
+public class BankAccount {
+    // 私有属性（封装）
+    private final String accountNumber; // 账户号，创建后不可修改
+    private String ownerName;           // 户主姓名，可修改
+    private double balance;            // 余额，只能通过存取款修改
+
+    // 构造方法：必须传入账户号和户主姓名，初始余额为0
+    public BankAccount(String accountNumber, String ownerName) {
+        this.accountNumber = accountNumber;
+        this.ownerName = ownerName;
+        this.balance = 0.0;
+    }
+
+    // 存款方法
+    public void deposit(double amount) {
+        if (amount > 0) {
+            balance += amount;
+            System.out.println("存款成功！当前余额：" + balance);
+        } else {
+            System.out.println("存款失败！金额必须大于0。");
+        }
+    }
+
+    // 取款方法
+    public void withdraw(double amount) {
+        if (amount > 0 && amount <= balance) {
+            balance -= amount;
+            System.out.println("取款成功！当前余额：" + balance);
+        } else {
+            System.out.println("取款失败！金额必须大于0且不超过当前余额。");
+        }
+    }
+
+    // 查询余额
+    public double getBalance() {
+        return balance;
+    }
+
+    // 户主姓名 getter/setter（允许修改）
+    public String getOwnerName() {
+        return ownerName;
+    }
+
+    public void setOwnerName(String ownerName) {
+        this.ownerName = ownerName;
+    }
+
+    // 账户号 getter（无setter，保证不可修改）
+    public String getAccountNumber() {
+        return accountNumber;
+    }
+}
+