十二周练习

Posted 2021-02-18 bwk521

package bwk;
/*2、设计四个类，分别是：（知识点：抽象类及抽象方法）
（1）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。

 */
public abstract class Ftgv{


        // TODO Auto-generated method stub
        protected double area;
        protected double per;
        protected String color;
        public Ftgv() {
        }

        public Ftgv(String color) {
            this.color = color;
        }
         public abstract void getArea();

         public abstract void getPer();

         public abstract void showAll();
            
    }

package bwk;
/*（2）2个子类：
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）。
*/
public class Cbwf extends Ftgv {


           double width;
            double height;
            public Cbwf() {
            }
            public Cbwf(String color, double width, double height) {
                super(color);
                this.width = width;
                this.height = height;
                this.color=color;
            }
            public void getPer() {
                per = (width+height)*2;
            }
            public void getArea() {
                area =(width*height);
            }
            public void showAll() {
                System.out.println("矩形面积为：" + area + "，周长为：" + per + ",颜色：" + color);
    }

}

package bwk;

public class Bgsdr extends Ftgv  {

         int radius;

            public Bgsdr(int radius,String color) {
                super(color);
                this.radius = radius;
                this.color=color;
            }

            public void getPer() {
                per = radius*2*3.14;
            }
            public void getArea() {
                area =radius*radius*3.14;
            }
            public void showAll() {
                System.out.println("圆形面积为：" + area + "，周长为：" + per + ",颜色：" + color);
    }

}

package bwk;

public class Kuhud {


         public static void main(String[] args) {
                Ftgv r1= new Cbwf("蓝色",5.0,6.0);
                Ftgv c1 = new Bgsdr(5,"白色");
                r1.getArea();
                r1.getPer();
                c1.getArea();
                c1.getPer();
                r1.showAll();
                c1.showAll();
    }

}

package bwk;
/*Cola公司的雇员分为以下若干类：(知识点：多态)

(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。*/
public class Jhd {


        String name;
        int month;

        public Jhd() {

        }

        public Jhd(String name, int month) {
            super();
            this.name = name;
            this.month = month;
        }

        public double getSalary(int month) {
            return 0;
    }

}

package bwk;
/*(2) SalariedEmployee ： ColaEmployee 的子类，拿固定工资的员工。

属性：月薪*/
public class Hgc extends Jhd {


           double salary;
            public Hgc() {
                super();
            }
            public Hgc(String name, int month,int salary) {
                super(name,month);
                this.salary = salary;
            }
            public double getSalary(int month) {
                if (super.month == month) {
                    return salary + 100;
                }else {
                    return salary;
                }
    }

}

package bwk;
/*(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。*/
public class Ntd extends Jhd {

        private int hourlysalary;
        private int hourlytime;

        public Ntd() {
            super();
        }

        public Ntd(String name, int month,int hourlytime,int hourlysalary) {
            super(name, month);
            this.hourlytime=hourlytime;
            this.hourlysalary=hourlysalary;
        }

        public double getHourlysalary(int month) {
             if (super.month == month) {
                    if (hourlytime > 160) {
                        return hourlysalary * 160 + hourlysalary * (hourlytime - 160) * 1.5 + 100;
                    } else {
                        return hourlysalary * hourlytime + 100;
                    }
                } else {
                    if (hourlytime > 160) {
                        return hourlysalary * 160 + hourlysalary * (hourlytime - 160) * 1.5;
                    } else {
                        return hourlysalary * hourlytime;
                    }
                }
    }

}

package bwk;
/*(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*/
public class Kbf extends Jhd {


          private int monthSales;// 月销售额
            private double royaltyRate;// 提成率
         
            public Kbf(String name, int month, int monthSales, double royaltyRate) {
                super(name, month);
                this.monthSales = monthSales;
                this.royaltyRate = royaltyRate;
            }
         
            public double getSalary(int month) {
                if (super.month == month) {
                    return monthSales * royaltyRate + 100;
                } else {
                    return monthSales * royaltyRate;
                }
    }

}

package bwk;
/*(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*/
public class Bja {

        public void getSalary(Jhd c,int month) {
            System.out.println(c.name + "在" + month + "月的月薪为" + c.getSalary(month)+"元");
    }

}

package bwk;
/*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*/
public class Mus {


         public static void main(String[] args) {
                // TODO Auto-generated method stub
                 Jhd[] all = {
                            new Hgc("田某", 5, 9000),//name,month,月薪
                            new Ntd("马某", 5, 10, 30),//name,month,时薪,小时数
                            new Kbf("田某某", 3, 50000, 0.3)//name,month,月销售额，提成率
                            };
                    for (int i = 0; i < all.length; i++) {
                        new Bja().getSalary(all[i],5);
                    }
    }

}

package bwk;
 
public interface Fruit {//提供接口

    }

package bwk;

public class apple implements Fruit{
    public apple(){
    System.out.println("创建了一个苹果");
    }
    }

package bwk;

public class banana implements Fruit{
public banana(){
System.out.println("创建了一个香蕉");
}
}

package bwk;

public class grape implements Fruit{
public grape(){
System.out.println("创建了一个葡萄");
}
}

package bwk;
import java.util.Scanner;
public class gardener {


        public Fruit create() {
            System.out.println("输入：");
            Scanner input = new Scanner(System.in);
            String name = input.next();
            
            Fruit fruit = null;
            switch(name){
            case "苹果":
                fruit = new apple();
                break;
            case "葡萄":
                fruit = new grape();
                break;
            case "香蕉":
                fruit = new banana();
                break;
            }
            
            input.close();
            
            return fruit;
    }

}

package bwk;

public class fruittest {
    public static void main(String[] args) {
        gardener g = new gardener();
        g.create();

    }}