抽象类继承（雇员练习）

package day6;
abstract class Employee
{
   private String name;
   private int id;
   private double pay;
   public Employee(String name,int id,double pay) {//父类中定义了一个带参数的构造函数，那么自己本来就有的隐式的构造函数就不存在了，那么子类中必须也有带参数的构造函数
    // TODO Auto-generated constructor stub
   this.name = name;
   this.id = id;
   this.pay = pay;
   
   }
   public abstract void work();//抽象方法是没有方法体的，但是在子类中一定要把抽象方法给实现
}
   class coder extends Employee
 {  
    
    public coder(String name, int id, double pay ) {
        super(name, id, pay );
        // TODO Auto-generated constructor stub
    }

    @Override
    
    public void work() {
        // TODO Auto-generated method stub
        System.out.println("coding");
        System.out.println();
    }
    
 }
   class manager extends Employee
   {
     private double bonus;
     public manager(String name, int id, double pay,double bonus) {
        super(name, id, pay);
        // TODO Auto-generated constructor stub
        this.bonus=bonus;
    }
    
    @Override
    public void work() {
        // TODO Auto-generated method stub
        System.out.println("manage");
    }
       
       
   }
public class Test4 {
    public static void main(String[] args  ) {
    coder c = new coder("jinjin", 12, 2.00) ;
    c.work();
    manager m = new manager("lili", 23, 123, 12);
    m.work();
   }
}

coding

manage

 

像这样的话报错的原因，是因为父类中定义了带参数的构造方法之后，不带参数的默认构造方法已经不存在了，所以在子类中没有必要再去写一个不带参数的构造方法，写一个构造方法就ok