1 import java.io.File;
2 import java.io.FileWriter;
3 import java.io.IOException;
4
5 public class work {
6
7 public static void main(String[] args) {
8 //在电脑D盘下创建一个文件为HelloWorld.txt文件
9 File file=new File("D:","HelloWorld.txt");
10 File file3=new File("E:","helloWorld.txt");
11 try {
12 FileWriter w = new FileWriter(file);
13 w.write("hello word!");
14 w.close();
15 }catch (IOException e ){
16 e.printStackTrace();
17 }
18 //创建文件，返回一个布尔值
19 boolean isCreate;
20 try {
21 isCreate = file.createNewFile();
22 if (isCreate) {
23 System.out.println("创建文件成功！");
24 }else {
25 System.out.println("创建文件失败！文件已经存在");
26 }
27 } catch (IOException e) {
28 System.out.println("创建文件失败！");
29 }
30
31 if (file.renameTo(file3)) {
32 System.out.println("文件移动成功！");
33 } else {
34 System.out.println("文件移动失败");
35 }
36 System.out.println(file.exists());
37 }
38 }
