import java.sql.*; 
  
public class Test 
{ 
  public static void main(String[] args) throws Exception 
  { 
    Class.forName("com.mysql.jdbc.Driver"); 
      
    //一開始必須填一個已經存在的數據庫 
    String url = "jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8";   
    Connection conn = DriverManager.getConnection(url, "root", "123456"); 
    Statement stat = conn.createStatement(); 
      
    //創(chuàng)建數據庫hello 
    stat.executeUpdate("create database hello"); 
      
    //打開創(chuàng)建的數據庫 
    stat.close(); 
    conn.close(); 
    url = "jdbc:mysql://localhost:3306/hello?useUnicode=true&characterEncoding=utf-8"; 
    conn = DriverManager.getConnection(url, "root", "123456"); 
    stat = conn.createStatement(); 
      
    //創(chuàng)建表test 
    stat.executeUpdate("create table test(id int, name varchar(80))"); 
      
    //添加數據 
    stat.executeUpdate("insert into test values(1, '張三')"); 
    stat.executeUpdate("insert into test values(2, '李四')"); 
      
    //查詢數據 
    ResultSet result = stat.executeQuery("select * from test"); 
    while (result.next()) 
    { 
      System.out.println(result.getInt("id") + " " + result.getString("name")); 
    } 
      
    //關閉數據庫 
    result.close(); 
    stat.close(); 
    conn.close(); 
  } 
}