From 78ef91b9f0593e5810d40e924319f2de1fb7275c Mon Sep 17 00:00:00 2001
From: Xingzhimeng <3408335915@qq.com>
Date: Wed, 25 Mar 2026 21:30:11 +0800
Subject: [PATCH] w3

---
 w3/BankAccount.java | 45 +++++++++++++++++++++++++++++++++++++++++++
 w3/Car.java         | 47 +++++++++++++++++++++++++++++++++++++++++++++
 w3/TeskBank.java    |  8 ++++++++
 w3/TestCar.java     |  6 ++++++
 4 files changed, 106 insertions(+)
 create mode 100644 w3/BankAccount.java
 create mode 100644 w3/Car.java
 create mode 100644 w3/TeskBank.java
 create mode 100644 w3/TestCar.java

diff --git a/w3/BankAccount.java b/w3/BankAccount.java
new file mode 100644
index 0000000..75c6d88
--- /dev/null
+++ b/w3/BankAccount.java
@@ -0,0 +1,45 @@
+public class BankAccount {
+    private String accountNumber;
+    private String ownerName;
+    private double balance;
+
+    public BankAccount(String accountNumber, String ownerName) {
+        this.accountNumber = accountNumber;
+        this.ownerName = ownerName;
+        this.balance = 0.0;
+    }
+
+    public String getAccountNumber() {
+        return accountNumber;
+    }
+
+    public String getOwnerName() {
+        return ownerName;
+    }
+
+    public void setOwnerName(String ownerName) {
+        this.ownerName = ownerName;
+    }
+
+    public double getBalance() {
+        return balance;
+    }
+
+    public void deposit(double amount) {
+        if (amount > 0) {
+            balance += amount;
+            System.out.println("存款成功！余额：" + balance);
+        } else {
+            System.out.println("存款金额必须大于0");
+        }
+    }
+
+    public void withdraw(double amount) {
+        if (amount > 0 && amount <= balance) {
+            balance -= amount;
+            System.out.println("取款成功！余额：" + balance);
+        } else {
+            System.out.println("取款失败，余额不足或金额非法");
+        }
+    }
+}
\ No newline at end of file
diff --git a/w3/Car.java b/w3/Car.java
new file mode 100644
index 0000000..ea20bad
--- /dev/null
+++ b/w3/Car.java
@@ -0,0 +1,47 @@
+public class Car {
+    private String brand;
+    private String color;
+    private double price;
+
+    public Car() {
+        this.brand = "未知";
+        this.color = "白色";
+        this.price = 100000;
+    }
+
+    public Car(String brand, String color, double price) {
+        this.brand = brand;
+        this.color = color;
+        if (price > 0) {
+            this.price = price;
+        } else {
+            this.price = 100000;
+        }
+    }
+
+    public String getBrand() {
+        return brand;
+    }
+
+    public void setBrand(String brand) {
+        this.brand = brand;
+    }
+
+    public String getColor() {
+        return color;
+    }
+
+    public void setColor(String color) {
+        this.color = color;
+    }
+
+    public double getPrice() {
+        return price;
+    }
+
+    public void setPrice(double price) {
+        if (price > 0) {
+            this.price = price;
+        }
+    }
+}
\ No newline at end of file
diff --git a/w3/TeskBank.java b/w3/TeskBank.java
new file mode 100644
index 0000000..0bca89d
--- /dev/null
+++ b/w3/TeskBank.java
@@ -0,0 +1,8 @@
+public class TestBank {
+    public static void main(String[] args) {
+        BankAccount acc = new BankAccount("62281234", "张三");
+        acc.deposit(1000);
+        acc.withdraw(300);
+        acc.withdraw(1000);
+    }
+}
\ No newline at end of file
diff --git a/w3/TestCar.java b/w3/TestCar.java
new file mode 100644
index 0000000..59d18e6
--- /dev/null
+++ b/w3/TestCar.java
@@ -0,0 +1,6 @@
+public class TestCar {
+    public static void main(String[] args) {
+        Car c1 = new Car();
+        Car c2 = new Car("比亚迪", "灰色", 150000);
+    }
+}
\ No newline at end of file