Help setting mysql

Code:

public class PermissionStorage
{
  private static String TABLE = "permissions_table";
  public static void downloadGroups()
  {
    try
    {
      PreparedStatement sql = Main.getConnection().prepareStatement("SELECT * FROM " + TABLE);
      ResultSet result = sql.executeQuery();
      while (result.next())
      {
        List<String> permissions = result.getString("permissions") == null ? null : getListFromJson(result.getString("permissions"));
        List<String> inheritance = result.getString("inheritance") == null ? null : getListFromJson(result.getString("inheritance"));
        new PermissionGroup(result.getInt("id"), result.getString("name"), result.getString("prefix"), result.getString("suffix"), permissions, inheritance);
      }
      for (PermissionGroup g : PermissionGroup.getGroups()) {
        g.convert();
      }
      result.close();
      sql.close();
    }
    catch (SQLException e)
    {
      e.printStackTrace();
    }
  }
  private static List<String> getListFromJson(String json)
  {
    if ((json == null) || (json.length() < 1)) {
      return null;
    }
    Gson g = Main.getGson();
    return (List)g.fromJson(json, new TypeToken<List<String>>() {}.getType());
  }
}

Can someone help me fix this error? I think this has something to do with the mysql table not being created properly but I don't know how to fix this

 

@timtower I think it's fixed now, thanks for the warning.