Java中File的相關操作

Creation of a file if it does not exist; Deletion of a file if it already exists.

1. package com.han;
3. import java.io.File;
5. /**
6. * Creation of a file if it does not exist;
7. * Deletion of a file if it already exists.
8. * @author han
9. *
10. */
11. public class FileTest {
13. public static void main(String[] args) {
14. // TODO Auto-generated method stub
15. File file=new File("/home/han/Documents","word.txt");
16. if(file.exists()){
17. System.out.println(file.getPath());
18. file.delete();
19. System.out.println("文件已刪除");
20. }else{
21. try{
22. file.createNewFile();
23. System.out.println("文件已創建");
24. }catch(Exception e){
25. e.printStackTrace();
26. }
27. }
29. }
31. }