1 import java.io.File;
2 import java.io.IOException;
3
4 public class FileDemo {
5 public static void main(String[] args) {
6 // 抛除异常IOEcxception
7 try {
8 fun();
9 } catch (IOException e) {
10 e.printStackTrace();
11 }
12 }
13 public static void fun() throws IOException {
14 // 在d盘创建一个文件夹aaa madir()创建文件夹目录
15 File file = new File("d:\aaa");
16 boolean mkdir = file.mkdir();
17 System.out.println(mkdir);
18 // 在d盘的文件夹aaa里面创建三个文本 createNewFile()创建文件
19 File file1 = new File("d:\aaa\aaa.txt");
20 boolean newFile1 = file1.createNewFile();
21 System.out.println(newFile1);
22 File file2 = new File("d:\aaa\bbb.txt");
23 boolean newFile2 = file2.createNewFile();
24 System.out.println(newFile2);
25 File file3 = new File("d:\aaa\ddd.txt");
26 boolean newFile3 = file3.createNewFile();
27 System.out.println(newFile3);
28
29 // 多创建了一个ccc.txt文本
30 // 删除文件夹内的ccc.txt文本
31 File file4 = new File("d:\aaa\ccc.txt");
32 boolean delete = file4.delete();
33 System.out.println(delete);
34
35 // 遍历文件夹aaa内的三个文本 list() 遍历
36 File file5 = new File("d:\aaa");
37 String[] list = file5.list();
38 for(String i:list){
39 System.out.println(i);
40 }
41 }
42 }
打印结果 再看看d盘有没有成功创建文件
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