The Statement update Statement execution

package com.lin.jdbc_01;import java.sql.Connection;import java.sql.DriverManager;import java.sql.Statement;/** Use Statement to operate DML, updata statement* */public class JdbcDemo1 {public static void main(String[] args) throws Exception {//1) Register the driverClass.forName("com.mysql.jdbc.Driver");// 2) Get the database connection objectConnection conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/mydb_01", "root", "123456");// 3) Prepare sqlString sql="update stu set name='Wang Wu' where id=4;";// 4) Create an execution objectStatement stmt=conn.createStatement();// 5) executeint count=stmt.executeUpdate(sql);System.out.println(count);// 6) Release resourcesstmt.close();conn.close();}}