mysql数据库修改添加Date格式列的方法

import java.sql.*;
import java.text.dateformat;
//数据库的查询
public class selecttable {

    string dbdriver="com.mysql.jdbc.driver";  
     string dburl="jdbc:mysql://localhost:3306/sss";//根据实际情况变化 
     string username="root"; 
     string password="123"; 
     public connection getconn() 
     { 
       connection conn=null; 
       try 
       { 
         class.forname(dbdriver); 
       } 
       catch (classnotfoundexception e) 
       { 
         e.printstacktrace(); 
       } 
       try 
       { 
         conn = drivermanager.getconnection(dburl,username,password);//注意是三个参数 
       } 
       catch (sqlexception e) 
       { 
         e.printstacktrace(); 
       } 
       return conn; 
     } 
 
public void select(){
connection conn = getconn();
try{
 statement stmt = conn.createstatement(); //创建statement对象
        system.out.println("成功连接到数据库！");
        string sql = "select * from jdbc";  //要执行的sql
        resultset rs = stmt.executequery(sql);//创建数据对象


        system.out.println("id"+"\t"+"name"+"\t"+"brithday");
        while (rs.next()){          
        system.out.print(rs.getint(1) + "\t");
          system.out.print(rs.getstring(2) + "\t");
          system.out.print(rs.getdate(3) + "\t");
          system.out.println();
        }
}catch(exception e){
e.printstacktrace();
}
        
      
      } 
public void insert(){
connection conn = getconn();
try{
statement stmt = conn.createstatement();
system.out.println("成功连接到数据库！");
string sql = "insert into jdbc (id,name,birthday) values(?,?,?)";
preparedstatement pst =conn.preparestatement(sql);
dateformat df = dateformat.getdateinstance();
 
java.util.date dd = df.parse("2000-12-12");//将yyyy-mm-dd格式的时间转换为date
long t = dd.gettime();
java.sql.date date = new java.sql.date(t);
 

pst.setint(1, 5);
pst.setstring(2, "limazhi");
pst.setdate(3, date);
pst.executeupdate();
select();
}catch(exception e){
e.printstacktrace();
}
 
}
public static void main(string args[]){
selecttable st = new selecttable();
st.insert();
}
     
}