cardconnect.java

使用Java编写的一个银行信用卡管理系统

package card;

import java.sql.*;

public class cardConnect
{
  public cardConnect()
  {
   try
   {
     Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
   }catch(ClassNotFoundException ee){  }
    try
    {
      jbInit();
    } catch( Exception ex )
    {
      ex.printStackTrace();
    }
  }

  public static Connection getconn() throws SQLException
  {
    String url="jdbc:odbc:dbcard";
    String username="sa";
    String password="4795587";
    return DriverManager.getConnection(url,username,password);
  }

  public static void close(ResultSet rs)
  {
    try
    {
      if(rs!=null)
      {
        rs.close();
      }
    }catch(Exception ex){}
  }

  public static void close(Statement stmt)
  {
    try
    {
      if(stmt!=null)
        stmt.close();
    }catch(Exception ex){}
  }

  public static void close(Connection conn)
  {
    try
    {
      if(conn!=null)
        conn.close();
    }catch(Exception ex){}
  }
  //调用本类的构造方法
  private static cardConnect dbconn=new cardConnect();
  private void jbInit() throws Exception
  {
  }
}