java连接sql时出现错

package aa;import java.sql.DriverManager;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;
import java.sql.*;
import java.sql.SQLException;
import java.lang.*;public class qq {
  Connection con;
  Statement sta;
  ResultSet rs;
  String sqldriver;
  String sqlurl;
  String user;
  String pwd;
  public qq(){
    sqldriver="sun.jdbc.odbc.JdbcOdbcDriver";
    sqlurl="jdbc:odbc:pub";
    user="sa";
    pwd="";
    init();
  }
  public void init()
  {
    try{
      Class.forName(sqldriver);
      System.out.println("driver is ok");
      con=DriverManager.getConnection(sqlurl,user,pwd);
      System.out.println("connection is ok");
      sta=con.createStatement();
      rs=sta.executeQuery("select * from titles");
      while(rs.next())
        System.out.println(rs.getDate(1));
    }catch(Exception e)
    {
      e.printStackTrace();
    }
  }
  public static void main(String[] args) {
    new qq();
    }
  }出现下面的错
D:\Borland\JBuilder2006\jdk1.5\bin\javaw -classpath "C:\Documents and Settings\Administrator\jbproject\aa\classes;D:\Borland\JBuilder2006\jdk1.5\jre\lib\jce.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\ext\localedata.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\ext\dnsns.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\ext\sunjce_provider.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\ext\sunpkcs11.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\deploy.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\charsets.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\plugin.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\im\thaiim.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\im\indicim.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\jsse.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\javaws.jar;D:\Borland\JBuilder2006\jdk1.5\jre\lib\rt.jar;D:\Borland\JBuilder2006\jdk1.5\sample\jnlp\servlet\jnlp.jar;D:\Borland\JBuilder2006\jdk1.5\sample\jnlp\servlet\jnlp-servlet.jar;D:\Borland\JBuilder2006\jdk1.5\sample\jnlp\servlet\jardiff.jar;D:\Borland\JBuilder2006\jdk1.5\lib\jconsole.jar;D:\Borland\JBuilder2006\jdk1.5\lib\dt.jar;D:\Borland\JBuilder2006\jdk1.5\lib\tools.jar;D:\Borland\JBuilder2006\jdk1.5\lib\htmlconverter.jar;D:\Borland\JBuilder2006\jdk1.5\demo\jfc\Java2D\Java2Demo.jar;D:\Borland\JBuilder2006\jdk1.5\demo\jfc\CodePointIM\CodePointIM.jar;D:\Borland\JBuilder2006\jdk1.5\demo\plugin\jfc\Java2D\Java2Demo.jar;D:\Borland\JBuilder2006\jdk1.5\demo\plugin\jfc\CodePointIM\CodePointIM.jar"  aa.qq 
driver is ok
java.sql.SQLException: [Microsoft][ODBC SQL Server Driver]Invalid character value for cast specification
at sun.jdbc.odbc.JdbcOdbc.createSQLException(JdbcOdbc.java:6958)
at sun.jdbc.odbc.JdbcOdbc.standardError(JdbcOdbc.java:7115)
at sun.jdbc.odbc.JdbcOdbc.SQLGetDataStringDate(JdbcOdbc.java:4035)
at sun.jdbc.odbc.JdbcOdbcResultSet.getDataStringDate(JdbcOdbcResultSet.java:5745)connection is ok at sun.jdbc.odbc.JdbcOdbcResultSet.getDate(JdbcOdbcResultSet.java:949)
at aa.qq.init(qq.java:36)
at aa.qq.<init>(qq.java:24)
at aa.qq.main(qq.java:43)