Java第九次作业

3、设计三个类，分别如下：（知识点：抽象类及抽象方法)［必做题］

·3.1设计 Shape 表示图形类，有面积属性 area 、周长属性 per ,

颜色属性 color ，有两个构造方法（一个是默认的、一个是为颜色赋值的），还有3个抽象方法，分别是： getArea 计算面积、 getPer 计算周长、 showAll 输出所有信息，还有一个求颜色的方法 getColor 。

·3.2设计2个子类：

·3.2.1 Rectangle 表示矩形类，增加两个属性， Width 表示长度

、 height 表示宽度，重写 getPer 、 getArea 和 showAll 三个方法，另外又增加一个构造方法（一个是默认的、一个是为高度、宽度、颜色赋值的）。

3.2.2 Circle 表示圆类，增加1个属性， radius 表示半径，重写

 getPer 、 getArea 和 showAll 三个方法，另外又增加两个构造方法（为半径、颜色赋值的）。

·3.3在 main 方法中，声明创建每个子类的对象，并调用2个

子类的 showAll 方法。

public abstract class Shape {

    double area;
    double per;
    String color;

    public Shape() {
        super();
    }

    public Shape(String color) {
        super();
        this.color = color;
    }

    public abstract double getArea();

    public abstract double getPer();

    public abstract void showAll();

    public String getColor() {
        return color;
    }
}


package zuoye9;

public class Rectangle extends Shape {
    double Width;
    double height;

    public Rectangle() {
        super();
    }

    public Rectangle(double width, double height, String color) {
        super(color);
        Width = width;
        this.height = height;
    }

    public double getArea() {
        double Area = Width * height;
        return Area;
    }

    public double getPer() {
        double Per = 2 * Width + 2 * height;
        return Per;
    }

    public void showAll() {
        System.out.println("长：" + height);
        System.out.println("宽：" + Width);
        System.out.println("面积：" + getArea());
        System.out.println("周长：" + getPer());
        System.out.println("颜色" + color);
    }


}

 

public class Circle extends Shape{

    public Circle() {
        super();
    }

    public Circle(double radius,String color) {
        super(color);
        this.radius = radius;
    }

    double radius;

    public  double getArea() {
        double Area=radius*radius*3.14;
        return Area;
    }

    public  double getPer()
    {
        double Per=2*3.14*radius;
        return Per;
    }

    public  void showAll()
    {
        System.out.println("半径："+radius);
        System.out.println("面积："+getArea());
        System.out.println("周长："+getPer());
        System.out.println("颜色"+color);
    }
}

 

public class menu {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Shape test_1 = new Circle(2, "黑的");
        Shape test_2 = new Rectangle(5, 5, "白的");
        test_1.showAll();
        test_2.showAll();
    }
}

 

·4、 Cola 公司的雇员分为以下若干类：（知识点：多态）［必做

题］

·4.1 ColaEmployee ：这是所有员工总的父类，属性：员工的

姓名，员工的生日月份。方法： getSalary ( int month ）根据参数月份来确定工资，如果该月员工过生日，则公司会额外奖励

100元。

4.2 SalariedEmployee :ColaEmployee 的子类，拿固定工

4.3 HourlyEmployee : ColaEmployee 的子类，按小时拿工资的员工，每月工作超出160小时的部分按照1.5倍工资发放。属性：每小时的工资、每月工作的小时数

·4.4 SalesEmployee : ColaEmployee 的子类，销售人员，工资由月销售额和提成率决定。属性：月销售额、提成率.4.5定义一个类 Company ，在该类中写一个方法，调用该方法可以打印出某月某个员工的工资数额，写一个测试类 TestCompany ，在 main 方法，把若干各种类型的员工在一个 ColaEmployee 数组里，并单元出数组中每个员工当月的工资。

资的员工。属性：月薪

public class SalesEmployee extends ColaEmployee {
    int Moon_Sales;
    double Commission;

    public SalesEmployee() {
        super();
    }

    public SalesEmployee(String name, int birthday, int moon_Sales, double commission) {
        super(name, birthday);
        Moon_Sales = moon_Sales;
        Commission = commission;
    }

    public double getSalary(int month) {
        double Salary = 0;
        Salary = Moon_Sales * Commission;
        if (birthday == month) {
            Salary = Salary + 100;
        }
        return Salary;
    }
}

public class TestCompany {

    public static void main(String[] args) {
        ColaEmployee[] test=new ColaEmployee[3];
        test[0]=new SalariedEmployee("leisihao",5,50000);
        test[1]=new HourlyEmployee("zhixiang",2,150,200);
        test[2]=new SalesEmployee("taoxinyv",9,120000,0.3);
        Company show_fun=new Company();
        show_fun.ShowSalary(test[0], 5);
        show_fun.ShowSalary(test[1], 2);
        show_fun.ShowSalary(test[1], 3);
        show_fun.ShowSalary(test[2], 9);
        show_fun.ShowSalary(test[2], 10);
    }

}

public class SalariedEmployee extends ColaEmployee{
    double Salary;

    public SalariedEmployee() {
        super();
    }

    public SalariedEmployee(String name,int birthday,double salary) {
        super(name,birthday);
        Salary = salary;
    }

    public double getSalary(int month) {
        if(birthday==month)
        {
            Salary=Salary+100;
        }
        return Salary;
    }

}

public class HourlyEmployee extends ColaEmployee {
    double Hour_Salary;
    double Moon_WorkHour;

    public HourlyEmployee() {
        super();
    }

    public HourlyEmployee(String name, int birthday, double hour_Salary, double moon_WorkHour) {
        super(name, birthday);
        Hour_Salary = hour_Salary;
        Moon_WorkHour = moon_WorkHour;
    }

    public double getSalary(int month) {
        double Salary = 0;
        if (Moon_WorkHour <= 160) {
            Salary = Hour_Salary * Moon_WorkHour;
        } else if (Moon_WorkHour > 160) {
            Salary = Hour_Salary * Moon_WorkHour + (Moon_WorkHour - 160) * Hour_Salary * 1.5;
        }
        if (birthday == month) {
            Salary = Salary + 100;
        }
        return Salary;
    }
}

public class Company {
    public void ShowSalary(ColaEmployee test,int month)
    {
        System.out.println("员工:"+test.name+"\n月份:"+month+"\n工资状况:"+test.getSalary(month));
    }
}
package zuoye9.two;

public abstract class ColaEmployee {
    String name;
    int birthday;

    public ColaEmployee() {
        super();
    }

    public ColaEmployee(String name, int birthday) {
        super();
        this.name = name;
        this.birthday = birthday;
    }
}