用JavaBean编写SQLServer数据库连接类

package conn.db;
import java.sql.*;
public class conndb {
  Connection conn;
  ResultSet rs;
  private int count;
    public conndb() {
    try {
        Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

    } catch (Exception ex) {}
    }
  public ResultSet executeQuery(String sql){
    try {
       conn=DriverManager.getConnection("Jdbc:Odbc:mysql","dxaw","123");
        Statement stat=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,
ResultSet.CONCUR_UPDATABLE);
        rs=stat.executeQuery(sql);
    } catch (Exception ex1) {
    }
  return rs;
  }
 public void executeUpdate(String sql){
     try {
            conn = DriverManager.getConnection("Jdbc:Odbc:mysql", "dxaw","123");
            Statement stat=conn.createStatement();
            stat.executeQuery(sql);
        } catch (Exception ex2) {
    }
 }
}