Java - 搜索目录中的文件 [英] Java - Search for files in a directory

问题描述

这应该很简单，但我无法得到它 - 编写一个在给定目录中搜​​索特定文件名的程序。我找到了一些硬编码的文件名和目录的例子，但是我需要用户输入的目录和文件名。

This is supposed to be simple, but I can't get it - "Write a program that searches for a particular file name in a given directory." I've found a few examples of a hardcoded filename and directory, but I need both the dir and file name to be as entered by the user.

public static void main(String[] args) {
    String fileName = args[0]; // For the filename declaration
    String directory;     
    boolean found;

    File dir = new File(directory);

    File[] matchingFiles = dir.listFiles(new FilenameFilter() {
        public boolean accept(File dir, String fileName) {
            return true;
        }
    });

}

推荐答案

尝试这样的东西：

import java.io.*;
import java.util.*;
class FindFile 
{
    public void findFile(String name,File file)
    {
        File[] list = file.listFiles();
        if(list!=null)
        for (File fil : list)
        {
            if (fil.isDirectory())
            {
                findFile(name,fil);
            }
            else if (name.equalsIgnoreCase(fil.getName()))
            {
                System.out.println(fil.getParentFile());
            }
        }
    }
    public static void main(String[] args) 
    {
        FindFile ff = new FindFile();
        Scanner scan = new Scanner(System.in);
        System.out.println("Enter the file to be searched.. " );
        String name = scan.next();
        System.out.println("Enter the directory where to search ");
        String directory = scan.next();
        ff.findFile(name,new File(directory));
    }
}

以下是输出：

Here is the output:

J:\Java\misc\load>java FindFile
Enter the file to be searched..
FindFile.java
Enter the directory where to search
j:\java\
FindFile.java Found in->j:\java\misc\load

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