JAVA第15周

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
资的员工。属性：月薪
课后作业
• 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 homework1;

public class TestCompany {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		ColaEmployee c1[] = { new SalariedEmployee("张三", 2, 300),
				new HourlyEmployee("李四", 7, 300, 220),
				new SalesEmployee("王五", 4, 3500, 1.0) };
		for (int i = 0; i < c1.length; i++) {
			new Company().getSalary(c1[i], 5);

		}
	}

}

　　

package homework1;

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

　　

package homework1;

public class HourlyEmployee extends ColaEmployee {
	protected int gongzi;
    protected int xiaoshishu;

    public HourlyEmployee(String name, int month, int gongzi, int xiaoshishu) {
        super(name, month);
        this.gongzi = gongzi;
        this.xiaoshishu = xiaoshishu;
    }

    public HourlyEmployee() {
        super();
    }

    public double getSalary(int month) {
        if (super.month == month) {
            if (xiaoshishu > 160) {
                return gongzi * 160 + gongzi * (xiaoshishu - 160) * 1.5 + 100;
            } else {
                return gongzi * xiaoshishu + 100;
            }
        } else {
            if (xiaoshishu > 160) {
                return gongzi * 160 + gongzi * (xiaoshishu - 160) * 1.5;
            } else {
                return gongzi * xiaoshishu;
            }
        }
    }
	

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub

	}

}

　　

package homework1;

public class SalariedEmployee extends ColaEmployee {
	protected double yuexin;

    public SalariedEmployee(String name, int month, double yuexin) {
        super(name, month);
        this.yuexin = yuexin;
    }

    public SalariedEmployee() {
        super();
    }
     public double getSalary(int month) {
            if (super.month == month) {
                return yuexin + 100;
            } else {
                return yuexin;
            }
        }

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub

	}

}

　　

package homework1;

public class SalesEmployee extends ColaEmployee{
	protected int mxiaoshoue;
    protected double tichenglv;

    public SalesEmployee(String name, int month, int mxiaoshoue,
            double tichenglv) {
        super(name, month);
        this.mxiaoshoue = mxiaoshoue;
        this.tichenglv = tichenglv;
    }

    public SalesEmployee() {
        super();
    }

    public double getSalary(int month) {
        if (super.month == month) {
            return mxiaoshoue * tichenglv + 100;
        } else {
            return mxiaoshoue * tichenglv;
        }
    }

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub

	}

}

　　

package homework1;

public class TestCompany {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		ColaEmployee c1[] = { new SalariedEmployee("张三", 2, 300),
				new HourlyEmployee("李四", 7, 300, 220),
				new SalesEmployee("王五", 4, 3500, 1.0) };
		for (int i = 0; i < c1.length; i++) {
			new Company().getSalary(c1[i], 5);

		}
	}

}

　　

 

 5、

package homework2;

import java.util.Scanner;

public interface Fruit {

}

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

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

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

class Gardener {
	public Fruit create() {
		Fruit f = null;
		Scanner input = new Scanner(System.in);
		String name = input.next();
		if (name.equals("苹果")) {
			f = new Apple();
		} else if (name.equals("香蕉")) {
			f = new Banana();
		} else if (name.equals("葡萄")) {
			f = new Grape();
		} else {
			System.out.println("no");
		}
		return f;

	}
}

　　

package homework2;

public class Test {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Gardener g = new Gardener();
		g.create();
	}
}