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

/**
 * @author 李佳琦
 */
package ccut;

import java.io.*;
import java.util.*;

class Q implements FilenameFilter{
    String l;
    Q(String l){
        this.l=l;
    }
    public boolean accept(File file,String name){
        return name.endsWith(l);
    }
}
public class Test {

    public static void main(String[] args) {
        Scanner reader=new Scanner(System.in);
        System.out.println("请输入路径:");
        String path=reader.nextLine();
        File file=new File(path);
        String filename[]=file.list();
        for(String name:filename){
            System.out.println(name);
        }
        System.out.println("输入查询的文件类型：");
        Q filew = new Q(reader.nextLine());
        String filename1[]=file.list(filew);
        for(String name:filename1){
            System.out.println(name);
        }
             System.out.println("请输入剪切的文件名：");
            String cut = reader.nextLine();
            File cutfile = new File(path+"\"+cut);
            System.out.println("请输入该文件需要移动到的目录：");
            String cutway = reader.nextLine(); 
            File cutlist = new File(cutway); 
            File newfile = new File(cutway+"\"+cut);
            try {
                newfile.createNewFile();
            } catch (IOException e) {
                e.printStackTrace();
            }
            InputStream inputStream = null;
            BufferedInputStream bufferedInputStream = null;
            String filedata="";
            Writer writer = null;
            BufferedWriter bufferedWriter = null;
            try {
                inputStream = new FileInputStream(cutfile);
                bufferedInputStream = new BufferedInputStream(inputStream);
                byte[] b = new byte[1024];
                int count = 0;
                while((count = bufferedInputStream.read(b, 0, 1024))!=-1){
                    filedata=filedata+new String(b, 0, count);
                }
                writer = new FileWriter(newfile);
                bufferedWriter = new BufferedWriter(writer);
                bufferedWriter.write(filedata);
            } catch (FileNotFoundException e1) {
                e1.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }finally{
                try {
                    bufferedInputStream.close();
                    inputStream.close();
                    bufferedWriter.close();
                    writer.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            cutfile.delete();
    }
} 

二、程序运行输出

原文件目录：

剪切后文件所在：