Question

I have a variable of type Date. I get this date by using a function that return type Date. So, I defined two variables as:

Date expDate=null, startDate=null;

Then, I called the functions:

expDate=c.getNotAfter();
startDate= c.getNotBefore();

Then, inserted into the database using:

prepStmt.setDate(1,(java.sql.Date) startDate);
prepStmt.setDate(2, (java.sql.Date) expDate);

After running the program, I get this error:

java.util.Date cannot be cast to java.sql.Date

The columns in the database are defined as DATETIME type. How can I resolve the issue?

Answer 1

Do like this:

  prepStmt.setDate(1,new java.sql.Date(startDate.getTime()));

java.sql.Date is a thin wrapper around a millisecond value that allows JDBC to identify this as an SQL DATE value. A milliseconds value represents the number of milliseconds that have passed since January 1, 1970 00:00:00.000 GMT.

java.util.Date classes getTime() returns the time in miliseconds. You can use this to create a new object of java.sql.Date class.

If you want time along with date, then use Timestamp:

prepStmt.setTimestamp(1,new java.sql.Timestamp(startDate.getTime()));