If you have used PreparedStatement with parameterized query (with question marks) and forget to set those parameters you will get an SQLException.
Example:String insertQuery ="insert into employees values(?,?)";
Connection connection = DriverManager.getConnection(url,userName,password);
PreparedStatement preparedStatement = connection.prepareStatement(insertQuery);
preparedStatement.execute();
As you can see the PreparedStatement is executed without setting the query parameters.
SolutionPreparedStatement preparedStatement = connection.prepareStatement(insertQuery);
preparedStatement.setString(1, "Micheal"); //Name
preparedStatement.setString(2, "IT"); //Dept
preparedStatement.execute();
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