eclipse裡用Java連接MySQL報錯

如下,想要在eclipse底下用java連接MySQL,build path之後卻出現(xiàn)ClassNotFoudException的例外,請問是哪裡出問題了?

`package kikikaka;

public class Kika {

public static void main(String[] args) {
 try{Class.forName("com.mysql.jdbc.Driver");
 }catch(ClassNotFoundException e) {
        System.out.println("Driver err");
    }

}
}`