simple byte-oriented file copy

1. /**
2. * simple copy image,
3. * @param src
4. * @param dest
5. */
6. public void copyImage(File src, File dest){
8. byte[] buffer = new byte[1024];
9. FileInputStream r = null;
10. FileOutputStream w = null;
11. int r_num=0;
12. try{
14. r = new FileInputStream( src);
15. w = new FileOutputStream( dest);
16. r_num = r.read(buffer, 0, 1024);
17. while(r_num != -1){
19. w.write(buffer, 0, r_num);
20. r_num = r.read(buffer, 0, 1024);
21. }
22. }
23. catch(IOException e){
24. e.printStackTrace();
25. }
26. finally{
27. try{
28. if(r != null)
29. r.close();
30. if(w != null)
31. w.close();
32. }
33. catch(IOException ex){
34. ex.printStackTrace();
35. }
36. }
37. }

可用於任何byte-oriented file, ex: image