员工类作业实例：

• 员工类：
• 属性：姓名，年龄，工资

• 方法：工作

• 经理类：多加了奖金，工作的方法打印”管理酒店”

• 服务员类：工作方式打印“上菜和结账”

• 厨师类：工作方法打印“做饭”

• 一共有一个经理，2个服务员，一个初始（自己定义属性）

• 所有的员工都需要工作
• 求所有的员工的工资总收入是多少

父类：用来定义属性

package Test12_Demo.Demo09;/*
    @create 2020--11--30--16:19
*/
public class Attribute {
    private String name;
    private int age;
    private int salary;
    public Attribute() {
    }
    public Attribute(String name, int age, int salary) {
        this.name = name;
        this.age = age;
        this.salary = salary;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }
    public int getSalary() {
        return salary;
    }
    public void setSalary(int salary) {
        this.salary = salary;
    }
    public void work(){
        System.out.println("work work");
    }
}

厨师类：

package Test12_Demo.Demo09;/*
    @create 2020--11--30--16:21
*/
public class Cooker extends Attribute {
    public void work() {
        System.out.println("厨师正在做饭");
    }
    public Cooker() {
    }
    public Cooker(String name, int age, int salary) {
        super(name, age, salary);
    }
}

经理类：

package Test12_Demo.Demo09;/*
    @create 2020--11--30--16:21
*/
public class Manager extends Attribute{
    private int bonus;
    public void work() {
        System.out.println("经历在管理酒店");
    }
    public Manager() {
    }
    public Manager(int bonus) {
        this.bonus = bonus;
    }
    public Manager(String name, int age, int salary, int bonus) {
        super(name, age, salary);
        this.bonus = bonus;
    }
    public int getBonus() {
        return bonus;
    }
    public void setBonus(int bonus) {
        this.bonus = bonus;
    }
}

服务员类：

package Test12_Demo.Demo09;/*
    @create 2020--11--30--16:22
*/
import com.sun.xml.internal.ws.api.model.wsdl.WSDLOutput;
import org.w3c.dom.ls.LSOutput;
public class StaffOne extends Attribute {
    public void work() {
        System.out.println("服务员一在上菜和结账");
    }
    public StaffOne() {
    }
    public StaffOne(String name, int age, int salary) {
        super(name, age, salary);
    }
}

package Test12_Demo.Demo09;/*
    @create 2020--11--30--16:22
*/
public class StaffTwo extends Attribute {
    public void work() {
        System.out.println("服务员二在上菜和结账");
    }
    public StaffTwo() {
    }
    public StaffTwo(String name, int age, int salary) {
        super(name, age, salary);
    }
}

测试类：

/**
 *
 * 员工类：
 * 属性：姓名，年龄，工资
 * 方法：工作
 *
 * 经理类：多加了奖金，工作的方法打印"管理酒店"
 * 服务员类：工作方式打印“上菜和结账”
 * 厨师类：工作方法打印“做饭”
 *
 * 一共有一个经理，2个服务员，一个初始（自己定义属性）
 * 所有的员工都需要工作
 * 求所有的员工的工资总收入是多少
 *
 */
package Test12_Demo.Demo09;/*
    @create 2020--11--30--16:06
*/
import sun.security.krb5.internal.crypto.CksumType;
public class DemoTest {
    public static void main(String[] args) {
        Cooker cooker = new Cooker("Cooker",20,3000);
        System.out.println("厨师的姓名为："+cooker.getName()+"，年龄为：" + cooker.getAge()+"，工资为："+cooker.getSalary());
        Manager manager = new Manager("Manager", 20, 3000,2000);
        System.out.println("经理的姓名为："+manager.getName()+"，年龄为：" + manager.getAge()+"，工资为："+manager.getSalary()+"奖金为："+manager.getBonus());
        StaffOne staffOne = new StaffOne("StaffOne", 20, 1500);
        System.out.println("第一个服务员的姓名为："+staffOne.getName()+"，年龄为：" + staffOne.getAge()+"，工资为："+staffOne.getSalary());
        StaffTwo staffTwo = new StaffTwo("StaffTwo", 20, 1500);
        System.out.println("第二个服务员的姓名为："+staffTwo.getName()+"，年龄为：" + staffTwo.getAge()+"，工资为："+staffTwo.getSalary());
        work(cooker, manager, staffOne, staffTwo);
        int sum = getSum(cooker, manager, staffOne, staffTwo);
        System.out.println("工资之和为：" + sum);
    }
    public static void work(Cooker cooker, Manager manager, StaffOne staffOne, StaffTwo staffTwo) {
        cooker.work();
        manager.work();
        staffOne.work();
        staffTwo.work();
    }
    public static int getSum(Cooker cooker, Manager manager, StaffOne staffOne, StaffTwo staffTwo) {
        return cooker.getSalary() + manager.getBonus() + manager.getSalary() + staffOne.getSalary() + staffTwo.getSalary();
    }
}