public class TestEmployee {
    public static void main(String[] args) {
        Employee emp1 = new Employee("E001", "张三", "技术部", 5000.0);
        Employee emp2 = new Employee("E002", "李四", "销售部", 1800.0); // 会自动设为 2000

        System.out.println("初始状态：");
        System.out.println(emp1);
        System.out.println(emp2);

        emp1.raiseSalary(10); // 涨 10%
        emp2.raiseSalary(-5); // 无效操作

        System.out.println("\n调整后：");
        System.out.println(emp1);
        System.out.println(emp2);
    }
}