itwayq的专栏

<br />import java.io.File;<br />public class test<br />{<br />    <br />    public static void main(String[] args)<br />    {<br />       <br />        File f = new File("Y:/home/////gzt1/"); //模拟不存在的目录<br />        System.out.println("before make," + f.ex