摘要：
import java.io.*; public class Practice_3 { public static void main(String[] args) throws IOException { // TODO Auto-generated method stub File dir = new File("c:\\practice"); ... 阅读全文
摘要：
import java.io.*; public class Practice_3 { public static void main(String[] args) throws IOException { // TODO Auto-generated method stub File dir = new File("c:\\新建文件夹\\note"); String[] arr = dir.li 阅读全文