tupdate.java~7~

ATM机具有存款、取款、查询结余、打印凭条、修改密码功能。

package atm;

import java.sql.DriverManager;
import java.sql.Statement;
import java.sql.Connection;
import java.sql.ResultSet;

/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2008</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
public class Tupdate {
    public static int up;
    public static int a3;
   String strSql="";
   String database_username="";
   String database_password="";
   ResultSet rs = null;
   String url = "jdbc:odbc:atm";


    public Tupdate() {
        super();

        try {
            Ttranstype t2=new Ttranstype();
            String tr1=t2.tr;
            Tbalance t1=new Tbalance();
            int a2=t1.aa;
            Fecth f=new Fecth();
            String fe=f.d;
            userlogin uu = new userlogin();
            String t = uu.s;
            String er=(new java.util.Date()).toLocaleString();
            Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
            Connection dbConn = DriverManager.getConnection(url,
                    database_username, database_password);
            Statement stmt = dbConn.createStatement();
            while(rs.next() ){
                if(t2.equals("取款")){
              strSql="update cardinfo set"+"balance='"+a3+"where cardid='"+t+"'";
            int a1=Integer.parseInt(rs.getString("balance"));
             a3=a1-a2;
           int x = stmt.executeUpdate(strSql);

            }
        }
            rs.close();
            stmt.close();
            dbConn.close();

        } catch (Exception ee) {
            System.out.println(ee.getMessage());
        }
    }

    public static void main(String[] args) {
        Tupdate tupdate = new Tupdate();

}
}