Date operation

package jdbc.test;

import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Date;

public class DateManapulate {
 
 public static int writeDate(Date date) throws SQLException, ClassNotFoundException{
  String sql = "insert into tabe_date_text_blob (birthday) values (?)" ;
  PreparedStatement ps = JdbcMySqlUtil.getInstance().getPrepareStatement(sql);
  ps.setDate(1, new java.sql.Date(new java.util.Date().getTime()));
  int x = ps.executeUpdate() ;
  JdbcMySqlUtil.free(null, ps, ps.getConnection());
  return x ;
 }
 
 public static Date readDate() throws SQLException, ClassNotFoundException{
  String sql ="select birthday from tabe_date_text_blob where id = 1" ;
  Statement st = JdbcMySqlUtil.getInstance().getStatement();
     ResultSet rs = st.executeQuery(sql);

     Date d ;
     while(rs.next())
      d= rs.getDate(1);  //java.sql.Date is a sub class of java.util.Date

      JdbcMySqlUtil.free(rs, st, st.getConnection());
     return null ;
 }
}