try {			//1、加载驱动			Class.forName("oracle.jdbc.OracleDriver");		} catch (ClassNotFoundException e) {			// TODO Auto-generated catch block			e.printStackTrace();		}		//2、创建连接		Connection conn = null;		 try {			conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:orcl", "scott", "tiger");//jdbc:mysql://localhost:3306/myProject		} catch (SQLException e) {			// TODO Auto-generated catch block			e.printStackTrace();		}		PreparedStatement pstmt = null;		List
     
       list1 = new ArrayList
      
       ();		try {			String sql = "";						pstmt = conn.prepareStatement(sql);			ResultSet rs = pstmt.executeQuery();			while(rs.next()){				ExitFinanceBean bean = new ExitFinanceBean();				bean.setE_id(rs.getInt("e_id"));				bean.setName(rs.getString("e_name"));										list1.add(bean);			}					} catch (SQLException e) {			// TODO Auto-generated catch block			e.printStackTrace();		} finally{			 try {				 	if(pstmt!=null||conn!=null){				 		pstmt.close();						conn.close();				 	}									} catch (SQLException e) {					// TODO Auto-generated catch block					e.printStackTrace();				}		}