diff --git a/w3/EmployeeTest.java b/w3/EmployeeTest.java
new file mode 100644
index 0000000..3a21cfc
--- /dev/null
+++ b/w3/EmployeeTest.java
@@ -0,0 +1,25 @@
+public class EmployeeTest {
+    public static void main(String[] args) {
+        // 创建两个Employee对象，包括公司名
+        Employee emp1 = new Employee("E001", "张三", "技术部", 8000.0, "湖南大学有限公司");
+        Employee emp2 = new Employee("E002", "李四", "人事部", 1800.0, "湖南大学有限公司");
+
+        // 演示属性的访问，输出所有员工信息
+        System.out.println("=== 所有员工信息 ===");
+        System.out.println(emp1);
+        System.out.println(emp2);
+
+        // 演示属性的修改
+        System.out.println("\n=== 修改员工属性 ===");
+        emp1.setDepartment("研发部");
+        System.out.println("张三修改部门后：" + emp1);
+
+        System.out.println("\n尝试修改李四工资为1500：");
+        emp2.setSalary(1500.0);
+        System.out.println("李四修改后工资：" + emp2.getSalary());
+
+        // 验证静态变量共享性（修改后所有实例同步更新）
+        System.out.println(emp1);
+        System.out.println(emp2);
+    }
+}
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