Connection con;
...

Statement st = con.createStatement();

 try  {
  st.execute("drop table test");
}  catch  (SQLException e) {
}
st.execute("create table test (date_value date)");

Timestamp from =  new  Timestamp( 104 ,  0 ,  1 ,  0 ,  0 ,  0 ,  0 );
PreparedStatement pst = con.prepareStatement(
  "insert into test (date_value)\n" +
  "select ? + (rownum - 1) / 24\n" +
  "from scott.emp"
);
pst.setTimestamp( 1 , from);
pst.execute();

pst = con.prepareStatement(
  "select date_value from test\n" +
  "where date_value between ? and ?\n" +
  "order by date_value"
);

Timestamp to =  new  Timestamp( 105 ,  0 ,  1 ,  0 ,  0 ,  0 ,  0 );
pst.setTimestamp( 1 , from);
pst.setTimestamp( 2 , to);
ResultSet rs = pst.executeQuery();
 while  (rs.next()) {
  System.out.println(rs.getTimestamp("date_value"));
}