JDBC setDate not working with preparedstatement - date

Question

I am pretty new to Java JDBC. I am trying to create a JDBC preparedstatement to do a SELECT between two Oracle DATE values.
I know that data exists between these two times, as I can do the query directly.
When I execute the prepared statement from within my JDBC code, however, it returns 0 rows.
My input start and times are Long Unix time values in milliseconds.
I have tried to pare down the code to the bare minimum:
public static List<Oam1731Sam5Data> getData(Long startTime, Long endTime) {
try {
String query = "SELECT timecaptured from oam1731data5 " +
"WHERE timecaptured between ? and ?";
pstmt = conn.prepareStatement(query); // create a statement
Date javaStartDate = new Date(startTime);
Date javaEndDate = new Date(endTime);
pstmt.setDate(1, javaStartDate);
pstmt.setDate(2, javaEndDate);
ResultSet rs = pstmt.executeQuery();
while (rs.next()) {
String serviceId = rs.getString("SERVICEID");
String recordSource = rs.getString("RECORDSOURCE");
Date timeCaptured = rs.getDate("TIMECAPTURED");
Long oneWayMaxDelay = rs.getLong("ONEWAYMAXDELAY");
Long twoWayMaxDelay = rs.getLong("TWOWAYMAXDELAY");
Long twoWayMaxDelayVar = rs.getLong("TWOWAYMAXDELAYVAR");
Long packetLoss = rs.getLong("PACKETLOSS");
}
} catch (SQLException se) {
System.err.println("ERROR: caught SQL exception, code: " + se.getErrorCode() +
", message: " + se.getMessage());
}
The issue is that this returns 0 rows, where the same query returns data:
select insert_date, recordsource, serviceid, timecaptured, onewaymaxdelay, twowaymaxdelay, twowaymaxdelayvar, packetloss from oam1731data5
where timecaptured between to_date('2012-01-18 07:00:00','YYYY-MM-DD HH24:MI:SS')
and to_date('2012-01-18 08:00:00','YYYY-MM-DD HH24:MI:SS')
order by insert_date
DBMS_OUTPUT:
INSERT_DATE RECORDSOURCE SERVICEID TIMECAPTURED ONEWAYMAXDELAY TWOWAYMAXDELAY TWOWAYMAXDELAYVAR PACKETLOSS
1/18/2012 10:43:36 AM EV TAMP20-MTRO-NID1SYRC01-MTRO-NID1 1/18/2012 7:25:24 AM 40822 79693 343 0
1/18/2012 10:43:36 AM EV SYRC01-MTRO-NID1TAMP20-MTRO-NID1 1/18/2012 7:25:13 AM 39642 79720 334 0
1/18/2012 10:43:36 AM EV TAMP20-MTRO-NID1SYRC01-MTRO-NID1 1/18/2012
I have seen and ready many posts about problems somewhat like this, but have not been
able to find the key yet!
I thought about trying to make my query use a string and simply convert my dates to strings to be able to insert them for the Oracle TO_DATE function, but it seems like I should not have to do this.
And here is the output from my println statements. Is it an issue that the dates that print do NOT show the time portion?
SQL query: SELECT timecaptured from oam1731data5 WHERE timecaptured between ? and ?
Java Oracle date: 2012-01-18 end date 2012-01-18
Thanks in advance for any help.
Mitch

Answer 1

A java.sql.Date represents a date without time. You must use a Timestamp if you care about the time part.
The javadoc of java.sql.Date says:
To conform with the definition of SQL DATE, the millisecond values
wrapped by a java.sql.Date instance must be 'normalized' by setting
the hours, minutes, seconds, and milliseconds to zero in the
particular time zone with which the instance is associated.

Answer 2

Using Date for your start and end dates shouldn't cause any problem. The data in the specified interval should be retrieved in that time interval (Those data that you printed which were inserted on 1/18/2012 are supposed to be retrieved in this case.) Therefore I don't think that omitting time portion is your problem.