程序生活的點滴

java建立新文件夾和實現文件的拷貝

1

import java.io.*;
2

3

public class Demo {
4

public static void main(String[] args) {
5

File dirFile;
6

File tempFile;
7

boolean bFile;
8

String sFileName;
9

10

bFile = false;
11

12

try {
13

dirFile = new File("E:\\test");
14

bFile = dirFile.exists();
15

16

if (bFile == true) {
17

System.out.println("The folder exists.");
18

} else {
19

System.out
20

.println("The folder do not exist,now trying to create a one

");
21

bFile = dirFile.mkdir();
22

if (bFile == true) {
23

System.out.println("Create successfully!");
24

} else {
25

System.out
26

.println("Disable to make the folder,please check the disk is full or not.");
27

System.exit(1);
28

}
29

}
30

31

System.out.println("Now we put files in to the folder

");
32

33

for (int i = 0; i < 5; i++) {
34

sFileName = new String("E:\\test\\");
35

sFileName += String.valueOf(i);
36

tempFile = new File(sFileName);
37

bFile = tempFile.createNewFile();
38

}
39

} catch (IOException e) {
40

// Exception hadler
41

}
42

43

if (bFile == true)
44

System.out.println("Successfully put files in to the folder!");
45

else
46

System.out.println("Sorry sir,i don't finish the job!");
47

}
48

}
49

1 import java.io.*;
2 import java.text.*;
3 import java.util.*;
4
5 /**
6  *   @author   ljt
7  *
8  *   To   change   this   generated   comment   edit   the   template   variable   "typecomment":
9  *   Window>Preferences>Java>Templates.
10  *   To   enable   and   disable   the   creation   of   type   comments   go   to
11  *   Window>Preferences>Java>Code   Generation.
12  */
13 public class ControlFile {
14     //已有文件的路徑,需要備份到那個路徑的名字
15     String filePath, aimFilePath;
16     //保存已有文件路徑下的所有的文件的名字   存放String
17     Vector vec;
18
19 /*    public ControlFile() {
20         filePath = "";
21         aimFilePath = "";
22         vec = new Vector();
23     }*/
24
25     public ControlFile(String filePath, String aimFilePath) {
26         this.filePath = filePath;
27         this.aimFilePath = aimFilePath;
28         vec = new Vector();
29     }
30
31     //得到目錄下所有文件的名字
32     private void getFileName() {
33         File f = new File(filePath);
34         String str[] = f.list();
35         for (int i = 0; i < str.length; i++) {
36             vec.addElement(str[i]);
37         }
38     }
39
40     //   文件的拷貝:::測試成功
41     private boolean bakFile(String fileName) {
42         try {
43             //讀文件
44             FileReader raf = new FileReader(filePath + fileName);
45             String detail = "";
46             BufferedReader buff = new BufferedReader(raf);
47             String temp = buff.readLine();
48             while (temp != null) {
49                 detail += temp + "\n";
50                 temp = buff.readLine();
51             }
52             raf.close();
53             System.out.println(detail);
54             //寫文件
55             File file = new File(aimFilePath + fileName);
56             PrintWriter out = new PrintWriter(new FileWriter(file));
57             out.print(detail);
58             out.close();
59
60         } catch (FileNotFoundException e) {
61             System.out.println("文件沒有找到");
62         } catch (IOException e) {
63             System.out.println("copyFile   出錯");
64         }
65         return true;
66     }
67
68     public static void main(String[] args) {
69         ControlFile confile = new ControlFile("D:\\readFile\\",
70                 "D:\\work\\bakFile\\");
71         confile.getFileName();
72         Vector ve = new Vector();
73         ve = confile.vec;
74         if (ve != null)
75             for (int i = 0; i < ve.size(); i++) {
76                 System.out.println((String) ve.elementAt(i));
77                 confile.bakFile((String) ve.elementAt(i));
78             }
79     }
80 }

posted on 2008-09-18 10:11 anoic 閱讀(1530) 評論(1) 編輯收藏

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# 新文件夾 2008-12-26 17:57 新文件夾

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java建立新文件夾和實現文件的拷貝

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