1 abstract class Action { 2  public static final int ECT=1; 3  public static final int WROLD=2; 4  public static final int Sleep=7; 5  public void cmmand(int fag){ 6     switch (fag) 7     { 8     case ECT:{ 9      this.ect();10     break;}11     case WROLD:{12       this.wrold();13       break;14               }15     case Sleep:{16       this.sleep();17       break;18       }19     }20     }21  public abstract void ect();22  public abstract void wrold();23  public abstract void sleep();24 }25 class roblt extends Action{26     public void ect(){27     System.out.println("正在吃饭中");28     }29     public void wrold(){30     System.out.println("正在工作中");31     }32     public void sleep(){}33 }34 class human extends Action{35     public void ect(){36     System.out.println("正在吃饭中");37     }38     public void wrold(){39     System.out.println("正在工作中");40     }41     public void sleep(){42     System.out.println("正在睡觉中");43     }44 }45 class pig extends Action{46     public void ect(){47     System.out.println("正在吃饭中");48     }49     public void wrold(){}50     public void sleep(){51     System.out.println("正在睡觉中");52     }53 }54 public class Noname155 {public static void main(String args[]){56    System.out.println("**********猪*********");57    fun(new pig());58     System.out.println("********人**********");59     fun(new human());60     System.out.println("********机器人*****");61     fun(new roblt());62    }63 public static void fun(Action act){64    act.ect();65    act.wrold();66    act.sleep();67    }68 }