Begynder problemer

Hej,
hvad er det lige jeg har af problemer her... ?

using System;
using System.Collections.Generic;
using System.Text;

namespace BombSquad
{
    public class CommandWords
    {
        private static readonly String[] validCommands = new String[9]("gå", "luk", "hjælp", "se", "undersøg", "tilbage", "tag", "inventar", "smid");
    }
 
    public bool isCommand(String aString)
    {
        for(int i = 0; i < validCommands.length; i++)
            {
                if(validCommands[i].equals(aString))
                return true;
            }
    }


    public void showAll()
    {
        for(int i = 0; i < validCommands.length; i++)
        {
            System.out.print(validCommands[i] + "  ");
        }
        System.out.println();
    }
     
}


"Error    1    Expected class, delegate, enum, interface, or struct"
"Error    3    Type or namespace definition, or end-of-file expected 19    5    BombSquad"