Question

I am wanting to insert a datetime into a MySql data base using Java and a prepared statement:

Calendar cal = Calendar.getInstance();
PreparedStatement stmnt = db.PreparedStatement("INSERT INTO Run " +
                       "(Time) VALUE (?) ");
    stmnt.setDate(1, new java.sql.Date(cal.getTime()));
    stmnt.executeQuery();  

NOTE: there is currently an error – cannot find symbol (java.sql.Date) line 4 here

db is an instance of a sort of wrapper class that exposes what I need from java.sql – its just getting a prepared statement from my connection object here.

Time (the column) is a date time in my database, and I can only see setDate and setTime method but I want to store both – also my code does not work anyway 😉

If anyone could give me some pointers on inserting a combined date time (current time would be a great help as that’s my first goal) into a MySql DB using a prepared statement I would be very grateful.

Thanks

Answer 1

The constructor for java.sql.Date takes a long (milliseconds since 1970) java.sql.Date
To get milliseconds from a java.uitl.Calendar, you use cal.getTimeInMillis()

Your code would be:

Calendar cal = Calendar.getInstance();
PreparedStatement stmnt = db.PreparedStatement("INSERT INTO Run " + "(Time) VALUE (?) ");
stmnt.setDate(1, new java.sql.Date(cal.getTimeInMillis()));
stmnt.executeQuery();