迟到的第14周作业

题目：

编写一个应用程序，输入一个目录和一个文件类型，显示该目录下符合该类型的所有文件。之后，将这些文件中的某一个文件剪切到另外一个目录中。

一、代码

 1 /**
 2  * @author 李佳琦
 3  */
 4 package ccut;
 5 
 6 import java.io.*;
 7 import java.util.*;
 8 
 9 class Q implements FilenameFilter{
10     String l;
11     Q(String l){
12         this.l=l;
13     }
14     public boolean accept(File file,String name){
15         return name.endsWith(l);
16     }
17 }
18 public class Test {
19 
20     public static void main(String[] args) {
21         Scanner reader=new Scanner(System.in);
22         System.out.println("请输入路径:");
23         String path=reader.nextLine();
24         File file=new File(path);
25         String filename[]=file.list();
26         for(String name:filename){
27             System.out.println(name);
28         }
29         System.out.println("输入查询的文件类型：");
30         Q filew = new Q(reader.nextLine());
31         String filename1[]=file.list(filew);
32         for(String name:filename1){
33             System.out.println(name);
34         }
35              System.out.println("请输入剪切的文件名：");
36             String cut = reader.nextLine();
37             File cutfile = new File(path+"\"+cut);
38             System.out.println("请输入该文件需要移动到的目录：");
39             String cutway = reader.nextLine(); 
40             File cutlist = new File(cutway); 
41             File newfile = new File(cutway+"\"+cut);
42             try {
43                 newfile.createNewFile();
44             } catch (IOException e) {
45                 e.printStackTrace();
46             }
47             InputStream inputStream = null;
48             BufferedInputStream bufferedInputStream = null;
49             String filedata="";
50             Writer writer = null;
51             BufferedWriter bufferedWriter = null;
52             try {
53                 inputStream = new FileInputStream(cutfile);
54                 bufferedInputStream = new BufferedInputStream(inputStream);
55                 byte[] b = new byte[1024];
56                 int count = 0;
57                 while((count = bufferedInputStream.read(b, 0, 1024))!=-1){
58                     filedata=filedata+new String(b, 0, count);
59                 }
60                 writer = new FileWriter(newfile);
61                 bufferedWriter = new BufferedWriter(writer);
62                 bufferedWriter.write(filedata);
63             } catch (FileNotFoundException e1) {
64                 e1.printStackTrace();
65             } catch (IOException e) {
66                 e.printStackTrace();
67             }finally{
68                 try {
69                     bufferedInputStream.close();
70                     inputStream.close();
71                     bufferedWriter.close();
72                     writer.close();
73                 } catch (IOException e) {
74                     e.printStackTrace();
75                 }
76             }
77             cutfile.delete();
78     }
79 }

二、程序运行输出

原文件目录：

剪切后文件所在：