java 把文件从一个目录，移动到另一目录并重命名。

 1 package eg2;
 2  
 3 import java.io.File;
 4 import java.util.Scanner;
 5  
 6 /******************
 7  * 文件的移动和重命名
 8  *******************/
 9 public class Test2_1 {
10  
11     static Scanner sc = new Scanner(System.in);
12  
13     public static void main(String[] args) {
14         // TODO Auto-generated method stub
15  
16         System.out.println("请输入文件当前目录：");
17         String oldpath = sc.next();
18         System.out.println("请输入目的目录：");
19         String newpath = sc.next();
20         File newpaths = new File(newpath);
21         if (newpaths.exists()) {
22             System.out.println("请输入要移动的文件名：");
23             String files = sc.next();
24             removefile(files, oldpath, newpath);
25         } else
26             System.out.println("该目录不存在！");
27     }
28  
29     public static void removefile(String filename, String oldpath, String newpath) {
30         if (!oldpath.equals(newpath)) {
31             File oldfile = new File(oldpath + "/" + filename);
32             File newfile = new File(newpath + "/" + filename);
33             if (oldfile.exists()) {
34                 if (newfile.exists()) {
35                     System.out.println("文件已存在，是否覆盖？1:是；2:不是。");
36                     int key = sc.nextInt();
37                     if (key == 1) {
38                         newfile.delete();
39                         oldfile.renameTo(newfile);
40                         System.out.println("文件移动成功,是否需要重命名该文件？1:是；2:不是。");
41                         int rename = sc.nextInt();
42                         if (rename == 1) {
43                             System.out.println("请输入新的文件名：");
44                             String filenames = sc.next();
45                             renameFile(newpath, filename, filenames);
46                         }
47                     } else {
48                         System.out.println("已取消移动！");
49                     }
50                 } else {
51                     oldfile.renameTo(newfile);
52                     System.out.println("文件移动成功,是否需要重命名该文件？1:是；2:不是。");
53                     int rename = sc.nextInt();
54                     if (rename == 1) {
55                         System.out.println("请输入新的文件名：");
56                         String filenames = sc.next();
57                         renameFile(newpath, filename, filenames);
58                     }
59                 }
60             } else
61                 System.out.println("文件不存在！");
62  
63         }
64     }
65  
66     public static void renameFile(String path, String oldFileName, String newFileName) {
67         if (!oldFileName.equals(newFileName)) {
68             File oldfile = new File(path + "/" + oldFileName);
69             File newfile = new File(path + "/" + newFileName);
70             oldfile.renameTo(newfile);
71         } else {
72             System.out.println("新名称与旧名称一致,是否重新命名？1：是；2：取消修改。");
73             int key = sc.nextInt();
74             if (key == 1) {
75                 System.out.println("请输入新的文件名：");
76                 String newFileNames = sc.next();
77                 renameFile(path, oldFileName, newFileNames);
78             }
79         }
80     }
81 }