When you use a PreparedStatement
you need to replace each “?” with a valid value before doing the actual query.
So the basics of the code would be:
String sql = "Select * from SomeTable where SomeColumn = ?";
PreparedStatement stmt = connection.prepareStatement(sql);
stmt.setString(1, someColumnVariable);
ResultSet rs = stmt.executeQuery();
solved I want to search for a product by its name and display the name and selling price in a JTextField in java [closed]