import java.sql.*;import java.text.DateFormat;//數據庫的查詢public class SelectTable {    String dbDriver="com.mysql.jdbc.Driver";       String dbUrl="jdbc:mysql://localhost:3306/sss";//根據實際情況變化      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);//注意是三個參數        }        catch (SQLException e)        {          e.printStackTrace();        }        return conn;      }  public void select(){Connection conn = getConn();try{ Statement stmt = conn.createStatement(); //創建Statement對象        System.out.println("成功連接到數據庫！");        String sql = "select * from jdbc";  //要執行的SQL        ResultSet rs = stmt.executeQuery(sql);//創建數據對象        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("成功連接到數據庫！");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");//將YYYY-MM-DD格式的時間轉換為datelong 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();}     }