15次

• 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。

public class ColaEmployee {
	 String name;
     int month;


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

	public ColaEmployee() {
         
     }
  
	public double getSalary(int month) {
      return 0;
     }
}
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");
	     }
}
public class HourlyEmployee extends ColaEmployee{
	private int hourSalary;
	private int hourNum;

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

}
public class SalariedEmployee extends ColaEmployee {
	 double monSalary;
     public SalariedEmployee(String name,int month,double monSalary) {
      super(name,month);
      this.monSalary=monSalary;
     }
     public double getSalary(int month) {
      if (super.month==month) {
       return monSalary +100;
      }else {
       return monSalary;
      }
      
     }
}
public class SalesEmployee extends ColaEmployee{
	private int monthSales;
	private double royaltyRate;

	public SalesEmployee(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;
	     }
	 }
}
public class text {
	 public static void main(String[] args) {
	          ColaEmployee[] a = {
	                        new SalariedEmployee("salariedEmployee", 4, 15000),
	                        new HourlyEmployee("hourlyEmployee", 5, 15, 756),
	                        new SalesEmployee("salesEmployee", 7, 46562, 0.3)
	                        };
	                for (int b = 0; b < a.length; b++) {
	                    new Company().getSalary(a[b],6);
	                }
	         }
}

　　

 

 • 5、利用接口实现动态的创建对象[选做题]
• 5.1 创建4个类：
• 苹果
• 香蕉
• 葡萄
• 园丁
• 5.2 在三种水果的构造方法中打印一句话.
• 以苹果类为例
• class apple
• {
• public apple()
• {
• System.out.println(―创建了一个苹果类的对象‖);
}
• }
课后作业
• 类图如下：
• 5.3 要求从控制台输入一个字符串，根据字符串的
值来判断创建三种水果中哪个类的对象

public interface jiekou{

}
public class pingguo implements jiekou{
	 public  pingguo() 
	    { 
	        System.out.println("一个苹果对象");
	    }
}
public class putao implements jiekou{
	  public putao() 
      { 
          System.out.println("一个葡萄对象");
      }
}
public class xiangjiao implements jiekou{
	  public xiangjiao() 
      { 
          System.out.println("创建了一个香蕉对象");
      }
}
import java.util.Scanner;


public class yuanding {
	 public jiekou create() {
         Scanner input = new Scanner(System.in);
         jiekou jiekou = null;
         String name = input.next();
         if (name.equals("苹果")) {
        	 jiekou = new pingguo();
         } else if (name.equals("香蕉")) {
        	 jiekou = new xiangjiao();
         } else if (name.equals("葡萄")) {
        	 jiekou = new putao();
         } else {
            System.out.println("不会种");
         }
         return jiekou;
	 }
}
public class text {
	public static void main(String[] args) {
        yuanding g = new yuanding();
          g.create();
    }
}