jdbc编程步骤

##1.Load the Driver

注册 Class.forName("oracle.jdbc.driver.OracleDirver");

或 new oracle.jdbc.driver.OracleDirver();

##2.Connect to the DataBase

DriverManager.getConnection();

##3.Execute the SQL

Connection.createStatement(); Statement.executeQuery(); Statement.executeUpdate();

##4.Restrieve the result data

循环取得结果while(rs.next()){}

##5.Show the result data

将数据库中的各类类型转换为java中的类型(getXXX)方法

##6.Close

close the ResultSet close the Statement close the Connection