From 1c4deb7303ae4cbe3c719ca69b59042d95be03d6 Mon Sep 17 00:00:00 2001
From: wangyandi <3512851994@qq.com>
Date: Wed, 25 Mar 2026 22:06:16 +0800
Subject: [PATCH] =?UTF-8?q?=E4=B8=8A=E4=BC=A0=E6=96=87=E4=BB=B6=E8=87=B3?=
 =?UTF-8?q?=20'w3'?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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---
 w3/Employee.java     | 95 ++++++++++++++++++++++++++++++++++++++++++++
 w3/EmployeeTest.java | 34 ++++++++++++++++
 2 files changed, 129 insertions(+)
 create mode 100644 w3/Employee.java
 create mode 100644 w3/EmployeeTest.java

diff --git a/w3/Employee.java b/w3/Employee.java
new file mode 100644
index 0000000..7c4fe6f
--- /dev/null
+++ b/w3/Employee.java
@@ -0,0 +1,95 @@
+public class Employee {
+    // 1. 定义私有属性
+    private String id;
+    private String name;
+    private String department;
+    private double salary;
+
+    // 最低工资标准，设为常量
+    private static final double MIN_SALARY = 2000.0;
+
+    /**
+     * 2. 提供必要的构造方法
+     * 这里提供一个全参构造方法
+     */
+    public Employee(String id, String name, String department, double salary) {
+        this.id = id;
+        this.name = name;
+        this.department = department;
+        // 使用 setSalary 方法来确保初始工资符合标准
+        this.setSalary(salary);
+    }
+
+    // 3. 提供合理的 getter 和 setter 方法
+
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getDepartment() {
+        return department;
+    }
+
+    public void setDepartment(String department) {
+        this.department = department;
+    }
+
+    public double getSalary() {
+        return salary;
+    }
+
+    /**
+     * 在 setSalary 中检查工资必须大于等于最低工资标准
+     */
+    public void setSalary(double salary) {
+        if (salary >= MIN_SALARY) {
+            this.salary = salary;
+        } else {
+            System.out.println("工资 " + salary + " 低于最低标准 " + MIN_SALARY + "，已自动设置为最低标准。");
+            this.salary = MIN_SALARY;
+        }
+    }
+
+    /**
+     * 4. 添加一个 raiseSalary 方法，按照百分比增加工资
+     * percent 为 5 表示增加 5%
+     */
+    public void raiseSalary(double percent) {
+        if (percent < 0) {
+            System.out.println("增长率不能为负数，增长无效。");
+            return;
+        }
+        double raiseAmount = this.salary * (percent / 100.0);
+        this.salary += raiseAmount;
+        // 确保增加后仍不低于最低工资
+        if (this.salary < MIN_SALARY) {
+            this.salary = MIN_SALARY;
+        }
+        System.out.println("工资已按 " + percent + "% 的比例增长。");
+    }
+
+    /**
+     * 为了方便打印对象信息，重写 toString 方法
+     */
+    @Override
+    public String toString() {
+        return "Employee{" +
+                "id='" + id + '\'' +
+                ", name='" + name + '\'' +
+                ", department='" + department + '\'' +
+                ", salary=" + salary +
+                '}';
+    }
+}
\ No newline at end of file
diff --git a/w3/EmployeeTest.java b/w3/EmployeeTest.java
new file mode 100644
index 0000000..d6e3fee
--- /dev/null
+++ b/w3/EmployeeTest.java
@@ -0,0 +1,34 @@
+public class EmployeeTest {
+    public static void main(String[] args) {
+        // 5. 编写测试类，创建两个 Employee 对象
+
+        // 创建第一个员工对象，工资符合标准
+        Employee emp1 = new Employee("E001", "张三", "研发部", 5000.0);
+        System.out.println("创建员工 emp1: " + emp1);
+
+        // 创建第二个员工对象，工资低于最低标准
+        Employee emp2 = new Employee("E002", "李四", "市场部", 1500.0);
+        System.out.println("创建员工 emp2: " + emp2);
+
+        System.out.println("\n--- 开始演示属性访问和修改 ---");
+
+        // 演示获取属性
+        System.out.println("emp1 的姓名是: " + emp1.getName());
+        System.out.println("emp2 的当前工资是: " + emp2.getSalary());
+
+        // 演示 raiseSalary 方法
+        System.out.println("\n对 emp1 进行调薪...");
+        emp1.raiseSalary(10.0);
+        System.out.println("emp1 调薪后的信息: " + emp1);
+
+        // 演示设置属性
+        System.out.println("\n修改 emp2 的部门...");
+        emp2.setDepartment("销售部");
+        System.out.println("emp2 修改部门后的信息: " + emp2);
+
+        // 演示 setSalary 的检查功能
+        System.out.println("\n尝试将 emp1 的工资设置为 1800...");
+        emp1.setSalary(1800);
+        System.out.println("emp1 修改工资后的信息: " + emp1);
+    }
+}