Java 练习(抽象类与抽象方法)

1. 编写一个Employee类，声明为抽象类，包含如下三个属性:name，id，salary。
2. 提供必要的构造器和抽象方法:work()。
3. 对于Manager类来说，他既是员工，还具有奖金(bonus)的属性。
   请使用继承的思想，设计CommonEmployee类和Manager类，要求类中提供必要的方法进行属性访问。

Employee.java

package com.klvchen.exer1;

abstract public class Employee {
	
	private String name;
	private int id;
	private double salary;
	
	public Employee() {
		super();
	}

	public Employee(String name, int id, double salary) {
		super();
		this.name = name;
		this.id = id;
		this.salary = salary;
	}
	
	public abstract void work();
}

Manager.java

package com.klvchen.exer1;

public class Manager extends Employee{
	
	private double bouns; //奖金
	
	public Manager(double bouns) {
		super();
		this.bouns = bouns;
	}
	
	public Manager(String name, int id, double salary, double bonus) {
		super(name, id, salary);
		this.bouns = bonus;
	}

	@Override
	public void work() {
		System.out.println("管理员工, 提供公司运行的效率");
	}
	
}

CommonEmployee.java

package com.klvchen.exer1;

public class CommonEmployee extends Employee {

	@Override
	public void work() {
		System.out.println("员工在一线车间生产产品");
	}
}

EmployeeTest.java

package com.klvchen.exer1;

public class EmployeeTest {
	public static void main(String[] args) {
		
		//多态
		Employee manager = new Manager(1000);
		manager.work();
		
		Employee commonEmployee = new CommonEmployee();
		commonEmployee.work();
	}
}