while (resGetMembersOfGroup.next())
				{
					String memberName = resGetMembersOfGroup.getString(3);
					lst.add(memberName);
					boolean _isExists = true;
					String sqlCheckAnotherExistsInbox = "select * from chatapp.inbox where sender = '" + memberName + "' and receiver = " + receiver + ";";
					ResultSet resCheckAnotherExistsInbox = this.query(sqlCheckAnotherExistsInbox);
					try {
						resCheckAnotherExistsInbox.next();
						resCheckAnotherExistsInbox.getString(3);
					}
					catch (SQLException e){
						_isExists = false;
					}

					if (_isExists) {
						String sqlUpdateIdLastMess = "update chatapp.inbox set idLastMess = " + lastIdMess + ", lastTime = '" + lastTime + "' where sender = '" + memberName + "' and receiver = " + receiver;
						this.update(sqlUpdateIdLastMess);
					}
					else
					{
						String sqlInsertInbox = "insert into chatapp.inbox values (" + lastIdMess + ", '" + lastTime + "', '" + memberName + "', " + receiver + ");";
						this.update(sqlInsertInbox);
					}
				}