java - I get an identifier expected error. Why? -

why getting identifier expected errors here? separate class main class, used describe rooms have move throughout. but, not know why getting error.

public class describeroom{     protected int roomnum;     public describeroom(roomnum){         this.roomnum = roomnum;     }//end constructor     public string describe(roomnum){         string[] room = {"you find in nicely trimmed front yard. there front door north.",             "you walk southern part of main hall. can't amazed decor.you see front door south, , rooms east , west. there more of hall north.",             "you in northern part of main hall. south rest of hall, , there doors north, west , east.",             "you walk bathroom. smells of lemon. there doors south , east.",             "you walk tidy bedroom. there doors south , east.",             "you walk living room. has couches , sized television. there doors west , south.",             "you walk dining room. has large table in middle candles. there doors west, north, , east.",             "you walk large kitchen. seems large enough house full staff. there door west , north.",             "you walk out onto wooden deck overlooks yard. there door south came.",             "you walk out of house , yard. surrounded fence large climb. there door south came."};         return room[roomnum];     } }//end class 

in method parameter have not set identifier.

use describe(int roomnum)