Storing NULL values in DB

I have a date field that might or might not contain data. What do you suggest I store it as
I store it as NULL riht now, but it is causing some problems such as nullPointer Exceptions.

My questions is -> what do experts do?
                      1. store null and then do a try catch whenever we access it
                  or 2. use a dummy date as 1901-01-01 as date and then change it during display as "" <empty string>

Thank you!
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Use option 1.

When you access it, you test it for null:

ResultSet resultSet = statement.executeQuery("select datecol from yourtable");
while ( {
    Date date = resultSet.getDate(1);

    // test to see if date is null
    if (date != null) {
        // do something with the date

applekannaAuthor Commented:
I got this problem becoz it was like this

ResultSet resultSet = statement.executeQuery("select datecol from yourtable");

    java.util.Date date = resultSet.getDate(1);//this returns java.sql.Data


I added a private method to later conver sql date to util date and added a try catch there.
Looking for your expert opinion
You don't have to convert java.sql.Date to java.util.Date.

java.sql.Date is a java.util.Date (it's a subclass of the latter).

Not sure what other problem you have.

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applekannaAuthor Commented:
I tried this when it gave me an error
PreparedStatement pstmt
applekannaAuthor Commented:
I should have type casted it.

pstmt.setDate(11, (java.sql.Date)utilDate);
You need to convert java.util.Date to java.sql.Date as follows:

pstmt.setDate(11, new java.sql.Date(utilDate.getTime()));
applekannaAuthor Commented:
Thank you
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