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。

package Wyyy;

public abstract class Shape {
    double area;
    double per;
    String color;
    
    
    
    
    public Shape(String color) {
        super();
        this.color = color;
    }
    public Shape() {
        super();
    }
    public abstract double getArea() ;
    public void setArea(double area) {
        this.area = area;
    }
    public abstract double getPer() ;
    public void setPer(double per) {
        this.per = per;
    }
    public String getColor() {
        return color;
    }
    public void setColor(String color) {
        this.color = color;
    }
    
    public abstract void showAll();

}
package Wyyy;

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

    public Rectangle(String color) {
        super(color);
    }

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

    @Override
    public double getArea() {
        // TODO Auto-generated method stub
        return weight*height;
    }

    @Override
    public double getPer() {
        // TODO Auto-generated method stub
        return (weight+height)*2;
    }

    @Override
    public void showAll() {        
        System.out.println("长是: "+weight);
        System.out.println("宽是: "+height);
        System.out.println("面积是: "+getArea());
        System.out.println("周长是: "+getPer());
        System.out.println("颜色是: "+getColor());
    }

}
package Wyyy;

public class Circle extends Shape{
    double radius;
    
    public Circle() {
        super();
    }
    
    public Circle(double radius,String color) {
        super(color);
        this.radius = 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);
    }
}
package Wyyy;

public class Test {
    public static void main(String[] args) {
        
        Circle i=new Circle(2,"紫色");
        Rectangle r=new Rectangle("红色", 5, 3);
        r.showAll();
        i.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(intmonth)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，拿固定工资的员工。属性：月薪
•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
•4.4SalesEmployee：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放在一个ColaEmployee数组里，并单元出数组中每个员工当月的工资。

package Wyyy;

public abstract class ColaEmployee {
    String name;
    int birthday;
    
    public ColaEmployee() {
        super();
    }

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

    public abstract double getSalary(int month);
}
package Wyyy;

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;
    }
    
}
package Wyyy;

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;
    }
    

}
package Wyyy;

public class SalesEmployee extends ColaEmployee{
    int MoonSales;
    double Royaltyrate;
    
    public SalesEmployee() {
        super();
    }

    public SalesEmployee(String name, int birthday, int moonSales, double royaltyrate) {
        super(name, birthday);
        MoonSales = moonSales;
        Royaltyrate = royaltyrate;
    }

    public double getSalary(int month) {
        double Salary=0;
        Salary=MoonSales*Royaltyrate;
        if(birthday==month) 
        {
            Salary=Salary+100;
        }
        return Salary;
    }
    
}
package Wyyy;

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 Wyyy;

public class Test {
    public static void main(String[] args) {
        
        ColaEmployee[] t=new ColaEmployee[3];
        t[0]=new SalariedEmployee("www",7,7000);
        t[1]=new HourlyEmployee("yyy",7,947,77);
        t[2]=new SalesEmployee("lhh",7,77777,0.7);
        Company i=new Company();
        i.ShowSalary(t[0], 3);
        i.ShowSalary(t[1], 2);
        i.ShowSalary(t[1], 4);
        i.ShowSalary(t[2], 7);
        i.ShowSalary(t[2], 9);
    }

}