preparedStatement syntax error

Question

I recently encountered this problem with Java PreparedStatements. I have the following code:

String selectSql1
        = \"SELECT `value` FROM `sampling_numb         


        

Answer 1

public ResultSet select1(String sql, int randNum) {
    try {
        this.stmt = con.prepareStatement(sql);
        stmt.setInt(1, randNum);
        return this.stmt.executeQuery();
    } catch (SQLException e) {
        e.printStackTrace();
        return null;
    }
}

for reference see below code

PreparedStatement statement =  con.prepareStatement("SELECT EMP_ID,EMP_PWD FROM employee " +
                    "WHERE EMP_ID = '"+param1+"'");
            ResultSet result = statement.executeQuery();