Java reported an error. What kind of mistake is this?

1. Wrote a castle game, suddenly reported an error, the subclass has inherited the method of the parent class, why also reported an error? And
2. Interface

package ChenBan;
public interface scene {
   //
   public void setExit(String name,scene room);
   //
   public String getExit();
   //
   public void res();
   //
   public void narration();
   //
   public String toString();
}

implement the interface

package ChenBan;
import java.util.HashMap;

public abstract class Room implements scene {
   private String description;
   private HashMap<String,scene> roomList=new HashMap<String,scene>();
   
   public Room(String description){
       this.description=description;
   }
   //
   public void setExit(String name,scene room){
       roomList.put(name, room);
   }
   //
   public String getExit(){
       StringBuffer s=new StringBuffer();
       for(String str:roomList.keySet()){
           s.append(str);
           s.append(roomList.get(str));
           s.append("");
       }
       if(roomList.isEmpty()){
          System.out.println("");
       }
       return s.toString();
   }
   //
   public Room getDirect(String direction){
       Room ret=(Room)roomList.get(direction);
       return ret;
   }
   //
   public String toString(){
       return this.description;
   }
}

subclass

package ChenBan;
public class BedRoom extends Room{
    public BedRoom(String description){
       super(description);
    }
    @Override
    public void res() {
        // TODO Auto-generated method stub    
    }
    @Override
    public void narration() {
       System.out.println("");              
    }
}

Business

package ChenBan;

public class Initial {
   //
   private scene currentRoom;
   //
   public void welcome(){
       System.out.println("");
       System.out.println("");
       System.out.println(""go "");
       System.out.println(""bye"");
       System.out.println(""help"");
   }
   //
   BedRoom bedRoom=new BedRoom("");
   scene s=new BedRoom("");
   FrontRoom frontRoom=new FrontRoom("");
   Kitchen kRoom=new Kitchen("");
   //
   s.setExit();//
}

3.s.setExit (); error Syntax error on token "setExit", Identifier expected after this token
I don"t understand what"s wrong. Thank you first

.
Oct.16,2021

package ChenBan;

public class Initial {
   //
   private scene currentRoom;
   //
   public void welcome(){
       System.out.println("");
       System.out.println("");
       System.out.println("'go '");
       System.out.println("'bye'");
       System.out.println("'help'");
   }
    public static void main(String args[]) { 
       //
       BedRoom bedRoom=new BedRoom("");
       scene s=new BedRoom("");
       FrontRoom frontRoom=new FrontRoom("");
       Kitchen kRoom=new Kitchen("");
       //
       s.setExit();//
    } 
}
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3e9c1-2c411.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3e9c1-2c411.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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