PreparedStatement throws syntax error [duplicate]

Answer 1

remove the parameter in this line:

rs= pst.executeQuery(query);

It must be

rs= pst.executeQuery();

Because the statement is prepared at PreparedStatement pst=conn.prepareStatement(query);

execute(String sql) is inherited from Statement and will execute the satement (sql) without prepared it.

Answer 2

Remove the parameter from

rs= pst.executeQuery(query);

change to

rs= pst.executeQuery();

If you pass query in pst.executeQuery(query); as parameter then this passed query string take priority over the query string you passed in conn.prepareStatement(query); and since in query(select * from linkedin_page_messages where company_id = ?) you dint pass parameter you get the error.