/*Update Username*/public boolean changeUsername(String username, String newUsername){
			try{
				if(newUsername.length() > 40)return false;
				if(username.length() > 40) return false;
				select1.setString(1, newUsername);
				ResultSet rs = select1.executeQuery();
				if(rs.next())return false;
				updateUsername.setString(1, newUsername);
				updateUsername.setString(2, username);
				updateUsername.executeUpdate();
				return true;
			}catch(Exception e){e.printStackTrace();}
			return false;
		}