java - How to set current date and time using prepared statement?

Question

I have a column in database having datatype DATETIME. I want to set this column value to current date and time using `PreparedStatement. How do I do that?

Answer 1

Use PreparedStatement#setTimestamp() wherein you pass a java.sql.Timestamp which is constructed with System#currentTimeMillis().

preparedStatement.setTimestamp(index, new Timestamp(System.currentTimeMillis()));
// ...

Alternativaly, if the DB supports it, you could also call a DB specific function to set it with the current timestamp. For example MySQL supports now() for this. E.g.

String sql = "INSERT INTO user (email, creationdate) VALUES (?, now())";

Or if the DB supports it, change the field type to one which automatically sets the insert/update timestamp, such as TIMESTAMP instead of DATETIME in MySQL.