private String createSql() {
		String columns = "";
		String qmarkNums = "";
		methodNames = new String[orm.size() - 2];

		int index = 0;
		for (String key : orm.keySet()) {
			if ("table".equals(key)) {
				continue;
			}
			if ("objName".equals(key)) {
				continue;
			}
			String value = orm.get(key);
			columns += key + ",";
			methodNames[index] = "get" + value.substring(0, 1).toUpperCase() + value.substring(1);
			qmarkNums += "?,";
			index++;
		}
		columns = columns.substring(0, columns.length() - 1);
		qmarkNums = qmarkNums.substring(0, qmarkNums.length() - 1);

		String sql = "insert into " + tableName + "(" + columns + ") values (" + qmarkNums + ")";
		return sql;
	}