java中abstract关键字学习及应用

abstract class Employee
{
	private String name;
	private String id;
	private double pay;
	
	Employee(String name, String id, double pay)
	{
		this.name = name;
		this.id = id;
		this.pay = pay;
	}
	
	public abstract void work();

}
class Manager extends Employee
{
	private int bonus;
	Manager(String name, String id, double pay, int bonus)
	{
		super(name, id, pay);
		this.bonus = bonus;
	}
	public void work()
	{
		System.out.println("manager work");
	}
}
class Pro extends Employee
{
	Pro(String name, String id, double pay)
	{
		super(name, id, pay);
	}
	public void work()
	{
		System.out.println("pro work");
	}
}

public class AbstractDemo
{
	public static void main(String[] args)
	{
		Manager m = new Manager("Jiang", "ID123", 1000.23, 300);
		m.work();
		Pro p = new Pro("Kun", "ID 213", 500.5);
		p.work();
	}
}