Java习题 chp6-24 **（封装、继承、super）某公司的雇员分为以下若干类：

 

 

文章目录

• chp6-24
• Employee.java
• SalariedEmployee.java
• HourlyEmployee.java
• SalesEmployee.java
• BasePlusSalesEmployee.java
• Test.java
• chp6_25
• Test2.java
• Test2.java 其他写法

 

chp6-24

**（封装、继承、super）某公司的雇员分为以下若干类：

Employee：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。

SalariedEmployee：Employee 的子类，拿固定工资的员工。属性：月薪

HourlyEmployee：Employee 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

SalesEmployee：Employee 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

BasePlusSalesEmployee：SalesEmployee 的子类，有固定底薪的销售人员，工资由底薪加上销售提成部分。属性：底薪。

根 据 要 求 创 建SalariedEmployee、HourlyEmployees、SaleEmployee 和BasePlusSalesEmployee四个类的对象各一个，并计算某个月这四个对象的工资。注意：要求把每个类都做成完全封装，不允许非私有化属性。类图如下：

Employee.java

package chap6_24;

public class Employee {
	private String name;//员工的姓名
	private int month;//员工的生日月份
	//构造方法
	public Employee(String name, int month) {
		super();
		this.name = name;
		this.month = month;
	}
	
	public Employee() {
		super();
		// TODO Auto-generated constructor stub
	}


	//根据月份确定工资
	public double getSlary(int month){
			return this.month==month?100:0;
	}

	public int getMonth() {
		return month;
	}
	
}

SalariedEmployee.java

package chap6_24;

public class SalariedEmployee extends Employee{
	private double salary;//月薪
	//构造方法
	public SalariedEmployee(String name, int month, double salary) {
		super(name, month);
		this.salary = salary;
	}

	public SalariedEmployee() {
		super();
		// TODO Auto-generated constructor stub
	}

	public double getSalary(int month) {
		return salary+super.getSlary(month);
	}

	
}

HourlyEmployee.java

package chap6_24;

public class HourlyEmployee extends Employee{
	private double hourlySalary;//每小时的工资
	private int hours;//每月工作的小时数
	//构造方法
	public HourlyEmployee(String name, int month, double hourlySalary, int hours) {
		super(name, month);
		this.hourlySalary = hourlySalary;
		this.hours = hours;
	}
	public HourlyEmployee() {
		super();
		// TODO Auto-generated constructor stub
	}
	
	public double getSlary(int month){
		if(hours<160)
			return hours*hourlySalary+super.getSlary(month);
		else
			return 160*hourlySalary+(hours-160)*hourlySalary*1.5+super.getSlary(month);
	}
}

SalesEmployee.java

package chap6_24;

public class SalesEmployee extends Employee{
	private double sales;//月销售额
	private double rate;//提成率
	//构造方法
	public SalesEmployee(String name, int month, double sales, double rate) {
		super(name, month);
		this.sales = sales;
		this.rate = rate;
	}
	public SalesEmployee() {
		super();
		// TODO Auto-generated constructor stub
	}
	
	public double getSalary(int month){
		return sales*rate+super.getSlary(month);
	}
}

BasePlusSalesEmployee.java

package chap6_24;

public class BasePlusSalesEmployee extends SalesEmployee{
	private double baseSalary;//销售人员的底薪
	//构造方法
	public BasePlusSalesEmployee(String name, int month, double sales, double rate, double baseSalary) {
		super(name, month, sales, rate);
		this.baseSalary = baseSalary;
	}

	public BasePlusSalesEmployee() {
		super();
		// TODO Auto-generated constructor stub
	}
	
	public double getSalary(int month) {
		return baseSalary+super.getSalary(month);
	}
}

Test.java

package chap6_24;

import java.io.ObjectInputStream.GetField;

public class Test {
	public static void main(String[] args) {
		SalariedEmployee salariedEmployee = new SalariedEmployee("张三",5,5000);
		System.out.println("张三的工资"+salariedEmployee.getSalary(6));
		HourlyEmployee h = new HourlyEmployee("李四",3,200,172);
		System.out.println("李四的工资"+h.getSlary(3));
		SalesEmployee se = new SalesEmployee("王五",4,100000,0.3);
		System.out.println("王五的工资"+se.getSalary(4));
		BasePlusSalesEmployee b = new BasePlusSalesEmployee("王二",5,20000,0.03,5000);
		System.out.println("王二的工资"+b.getSalary(3));


	}
}

chp6_25

25. *（多态）在上一题的基础上，创建一个Employee 数组，分别创建若干不同的Employee对象，并打印某个月的工资。

Test2.java

package chp6_25;

import java.io.ObjectInputStream.GetField;

public class Test {
	public static void main(String[] args) {
		Employee[] em = new Employee[4];
		em[0]=new SalariedEmployee("张三", 5, 5000);
		em[1]=new HourlyEmployee("李四", 3, 200, 172);
		em[2]=new SalesEmployee("王五", 4, 100000, 0.3);
		em[3]=new BasePlusSalesEmployee("王二", 5, 20000, 0.03, 5000);
		for(Employee e:em){
			System.out.println(e.getName()+"的5月工资为:"+e.getSlary(5));
		}
		
		
		
		
		SalariedEmployee salariedEmployee = new SalariedEmployee("张三",5,5000);
		System.out.println("张三的工资"+salariedEmployee.getSlary(5));
		HourlyEmployee h = new HourlyEmployee("李四",3,200,172);
		System.out.println("李四的工资"+h.getSlary(5));
		SalesEmployee se = new SalesEmployee("王五",4,100000,0.3);
		System.out.println("王五的工资"+se.getSlary(5));
		BasePlusSalesEmployee b = new BasePlusSalesEmployee("王二",5,20000,0.03,5000);
		System.out.println("王二的工资"+b.getSlary(5));


	}
}

Test2.java 其他写法

package chp6_25;

public class Test2 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Test2 t = new Test2();
		t.show(new SalariedEmployee("张三", 5, 5000),
				new HourlyEmployee("李四", 3, 200, 172),
				new SalesEmployee("王五", 4, 100000, 0.3),
				new BasePlusSalesEmployee("王二", 5, 20000, 0.03, 5000));
	}
	public void show(Employee...emps){
		for(Employee emp:emps){
			System.out.println(emp.getSlary(1));
		}
	}

}