JDBC java执行修改删除操作

package JDBC;

import java.sql.*;

public class DataBaseDelent {
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();
//修改一行数据
String sql ="update hehe set dname='中国',loc='西安' where deptno = 2;";
int len = stat.executeUpdate(sql);
System.out.println("更改的行数为："+len);
//删除一行数据
String sql1 = "delete from hehe  where loc='hehe' ";
int len1 = stat.executeUpdate(sql1);
System.out.println("删除的行数为："+len1);
stat.close();
conn.close();
}

}