java/w3/Employee.java

public class Employee {
    // 私有属性：封装
    private String id;
    private String name;
    private String department;
    private double salary;

    // 最低工资标准常量
    private static final double MIN_SALARY = 2000.0;

    // 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 来确保工资符合最低标准
        setSalary(salary);
    }

    // Getter 和 Setter
    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 中检查工资是否低于最低标准
    public void setSalary(double salary) {
        if (salary < MIN_SALARY) {
            System.out.println("警告：工资不能低于最低工资 " + MIN_SALARY + " 元，已自动设置为最低工资。");
            this.salary = MIN_SALARY;
        } else {
            this.salary = salary;
        }
    }

    // 涨薪方法：percent 为 5 表示增加 5%
    public void raiseSalary(double percent) {
        if (percent <= 0) {
            System.out.println("涨薪百分比必须大于 0");
            return;
        }
        double increase = this.salary * (percent / 100);
        double newSalary = this.salary + increase;
        setSalary(newSalary); // 复用 setSalary 的校验逻辑
    }

    // 方便展示员工信息的方法
    public void displayInfo() {
        System.out.println("工号：" + id + "，姓名：" + name + "，部门：" + department + "，工资：" + salary);
    }
}