Cola公司的僱員分為以下若干類：(知識點：多型) [必做

題]
• 4.1 ColaEmployee ：這是所有員工總的父類，屬性：員工的
姓名,員工的生日月份。方法：getSalary(int month) 根據引數
月份來確定工資，如果該月員工過生日，則公司會額外獎勵
100 元。
• 4.2 SalariedEmployee ： ColaEmployee 的子類，拿固定工
資的員工。屬性：月薪
課後作業
• 4.3 HourlyEmployee ：ColaEmployee 的子類，按小時拿工
資的員工，每月工作超出160 小時的部分按照1.5 倍工資發
放。屬性：每小時的工資、每月工作的小時數
• 4.4 SalesEmployee ：ColaEmployee 的子類，銷售人員，
工資由月銷售額和提成率決定。屬性：月銷售額、提成率
• 4.5 定義一個類Company，在該類中寫一個方法，呼叫該
方法可以打印出某月某個員工的工資數額，寫一個測試類
TestCompany,在main方法，把若干各種型別的員工放在一
個ColaEmployee 數組裡，並單元出陣列中每個員工當月的
工資。

package h22;

public class ColaEmployee{
    public String name;
    public int month;
    public double getSalary(int month){
        return 0;
    }
    public ColaEmployee(String name, int month) {
        super();
        this.name = name;
        this.month = month;
    }

    public ColaEmployee() {
        super();
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getMonth() {
        return month;
    }

    public void setMonth(int month) {
        this.month = month;
    }


}
package h22;

public class SalariedEmployee extends ColaEmployee{
    public double yx;
    public SalariedEmployee(String string, int i, int j){
        super();
    }
    public SalariedEmployee(String name, int month, double yuexin, double yx){
        this.yx = yx;
    }
     public double getSalary(int month) {
         if (super.month == month) {
             return yx + 100;
         } else {
             return yx;
         }
     }

}
package h22;

public class SalesEmployee extends ColaEmployee{
    public int yxse;
    public double tcl;
    public SalesEmployee() {
        super();
    }
    public SalesEmployee(String name, int month, int mxiaoshoue,
            double tichenglv) {
        super();
        this.yxse = mxiaoshoue;
        this.tcl = tichenglv;
    }
    public double getSalary(int month) {
        if (super.month == month) {
            return yxse * tcl + 100;
        } else {
            return yxse * tcl;
        }
    }

}
package h22;

public class HourlyEmployee extends ColaEmployee{
    public int gz;
    public int time;
    public HourlyEmployee() {
        super();
    }
    public HourlyEmployee(String name, int month, int gz, int time) {
        super();
        this.gz = gz;
        this.time = time;
    }
    public double getSalary(int month) {
        if (super.month == month) {
            if (time > 160) {
                return gz * 160 + gz * (time - 160) * 1.5 + 100;
            } else {
                return gz * time + 100;
            }
        } else {
            if (time > 160) {
                return gz * 160 + gz * (time - 160) * 1.5;
            } else {
                return gz * time;
            }
        }
    }

}
package h22;

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

}
package h22;

public class TestCompany {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        ColaEmployee c1[] = { 
                new SalariedEmployee("xh", 1, 9),
                new HourlyEmployee("lh", 4, 8, 200),
                new SalesEmployee("xm", 1, 46, 4) };
        for (int i = 0; i < c1.length; i++) {
            new Company().getSalary(c1[i], 1);

        }
    }

}

課後作業
• 5、利用介面實現動態的建立物件[選做題]
• 5.1 建立4個類：
• 蘋果
• 香蕉
• 葡萄
• 園丁
• 5.2 在三種水果的構造方法中列印一句話.
• 以蘋果類為例
• class apple
• {
• public apple()
• {
• System.out.println(―建立了一個蘋果類的物件‖);
}
• }
課後作業
• 類圖如下：
• 5.3 要求從控制檯輸入一個字串，根據字串的
值來判斷建立三種水果中哪個類的物件

package Week15;
import java.util.Scanner;
public interface Fruit {
 
}
class Apple implements Fruit {
    public Apple() {
       System.out.println("建立了一個蘋果物件");
   }
}
 
class Banana implements Fruit {
    public Banana() {
       System.out.println("建立了一個香蕉物件");
    }
}
 
class Putao implements Fruit {
    public Putao() {
        System.out.println("建立了一個葡萄物件");
    }
}
 
class Gardener {
    public Fruit create() {
        Fruit f = null;
        Scanner input = new Scanner(System.in);
       String name = input.next();
        if (name.equals("蘋果")) {
            f = new Apple();
        } else if (name.equals("香蕉")) {
            f = new Banana();
        } else if (name.equals("葡萄")) {
            f = new Putao();
        } else {
           System.out.println("不會種");
        }
        return f;
 
    }
}

public class textfruit {
    public static void main(String[] args) {
        Gardener g = new Gardener();
            g.create();
     
 }
}