抽象类的定义与使用

abstract class Action {
 public static final int ECT=1;
 public static final int WROLD=2;
 public static final int Sleep=7;
 public void cmmand(int fag){
    switch (fag)
    {
    case ECT:{
     this.ect();
    break;}
    case WROLD:{
      this.wrold();
      break;
              }
    case Sleep:{
      this.sleep();
      break;
      }
    }
    }
 public abstract void ect();
 public abstract void wrold();
 public abstract void sleep();
}
class roblt extends Action{
    public void ect(){
    System.out.println("正在吃饭中");
    }
    public void wrold(){
    System.out.println("正在工作中");
    }
    public void sleep(){}
}
class human extends Action{
    public void ect(){
    System.out.println("正在吃饭中");
    }
    public void wrold(){
    System.out.println("正在工作中");
    }
    public void sleep(){
    System.out.println("正在睡觉中");
    }
}
class pig extends Action{
    public void ect(){
    System.out.println("正在吃饭中");
    }
    public void wrold(){}
    public void sleep(){
    System.out.println("正在睡觉中");
    }
}
public class Noname1
{public static void main(String args[]){
   System.out.println("**********猪*********");
   fun(new pig());
    System.out.println("********人**********");
    fun(new human());
    System.out.println("********机器人*****");
    fun(new roblt());
   }
public static void fun(Action act){
   act.ect();
   act.wrold();
   act.sleep();
   }
}