anyone know why this is failing

The following code fails at the getObject(1)

Dave

package org.postgresql.test.jdbc2;

import org.postgresql.test.TestUtil;
import java.util.Calendar;
import junit.framework.*;
import java.sql.*;

/**
* <p>Title: </p>
* <p>Description: </p>
* <p>Copyright: Copyright (c) 2004</p>
* <p>Company: </p>
* @author not attributable
* @version 1.0
*/

public class GetXXXTest extends TestCase
{
Connection con = null;

public GetXXXTest(String name )
{
super(name);
}
protected void setUp() throws Exception
{
super.setUp();

con = TestUtil.openDB();
TestUtil.createTempTable(con, "test_interval", "initial timestamp
with time zone, final timestamp with time zone");

}

protected void tearDown() throws Exception
{
super.tearDown();
con.close();
}

public void testGetObject() throws SQLException
{
PreparedStatement pstmt = con.prepareStatement("insert into
test_interval values (?,?)");
Calendar cal = Calendar.getInstance();
cal.add( Calendar.DAY_OF_YEAR, -1 );

pstmt.setTimestamp(1, new Timestamp( cal.getTimeInMillis()));
pstmt.setTimestamp(2, new Timestamp( System.currentTimeMillis() ));
assertTrue(pstmt.executeUpdate() == 1);
ResultSet rs = pstmt.executeQuery("select (final-initial) as diff
from test_interval");
while (rs.next() )
{
String str = (String)rs.getString(1);

assertNotNull(str);
str = (String)rs.getObject(1);
assertNotNull(str);
}
}

}
--
Dave Cramer
519 939 0336
ICQ # 14675561