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   create database db5;
   use db5;
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   create table t(s1 int);
   insert into t values(5);
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package com.qll.operate;
import java.sql.*;
public class OperateUser {
 String driver = "com.mysql.jdbc.Driver";
 String url = "jdbc:mysql://localhost:3306/test";
 String name = "root";
 String password = "123456";
 static Connection conn = null;
 Statement st = ......

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