JDBC中Statement操作数据库 添加数据

/**
 * 功能java连接MySQL数据库
 *向数据表中添加数据
 */
package JDBC;
//连接数据库必须导入数据库驱动包
import java.sql.*;
public class MySqlConn {
public static final String DRIVER = "com.mysql.jdbc.Driver"; 
public static final String URL = "jdbc:mysql://127.0.0.1:3306/lianxi";   
public static final String USERNAME = "root";  
public static final String PASSWORD = "123456";
public static void main(String[] args) throws SQLException, ClassNotFoundException {
Connection conn = null; //每一个Connection对象表示一个数据库连接对象
Statement stat = null;
Class.forName(DRIVER);//加载驱动程序
conn=DriverManager.getConnection(URL,USERNAME,PASSWORD);
stat = conn.createStatement();
//String sql="insert into hehe values(3,'山西','太远')";
String sql ="insert into hehe values"+"(4,'hehe','hehe')";
int len = stat.executeUpdate(sql);
System.out.println("更新的行数为："+len);
stat.close();
conn.close();//关闭
}
}