JDBCl链接中Statement

作用：创建的Statement对象执行SQL语句

(1)对象有Connection对象调用createStatement()方法创建

(2)有Statement对象调用executeUpdate()方法执行SQL语句

(3)调用的SQL语句可以是insert delete update但不可以是select

import com.mysql.jdbc.Statement;import java.sql.Connection;import java.sql.Driver;import java.sql.ResultSet;import java.util.Properties;

/** * Created by I am master on 2016/9/29. */public class finallyjdbc {    public static void main(String[] args) throws Exception{            Connection connection=null;            Statement  statement=null;            //防止抛出的异常导致文件关闭失败            try {                Driver driver = new com.mysql.jdbc.Driver();                String url = "jdbc:mysql://localhost:3306/student";                Properties properties = new Properties();                properties.put("user", "root");                properties.put("password", "root");                connection = driver.connect(url, properties);                statement = (Statement) connection.createStatement();                String query = "insert into  studentInfo value(‘5‘,‘小五‘,‘17‘,‘计算机科学‘)";                statement.executeUpdate(query);                System.out.println("加入成功");            }catch (Exception e){                e.printStackTrace();            }finally {                try {                    statement.close();                }catch (Exception e){                    e.printStackTrace();                }finally {                    connection.close();

                }

            }    }}