java - 搜索文件 - Java - 需要升级

Question

我需要向这个 Java 程序添加两个小内容。

1. 当我尝试搜索文件时，我需要使其显示完整路径。目前，当我搜索 xmen.txt 时，它只显示 E:\books\comics\。我试图让它显示 E:\books\comics\xmen.txt 作为结果。

2. 如果搜索时没有类似名称的文件，我需要让它显示“找不到结果”。

此外，我没有接受过 Java 培训，该程序用于完成有关“搜索可能性”主题的文书作业。我试图通过在主题中添加面向对象的编程来让它变得更酷。

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("Write the file you are trying to find:" );
        String name = scan.next();
        System.out.println("Write the directory where you want to search for the file");
        String directory = scan.next();
        System.out.println("File was found in: ");
        ff.findFile(name,new File(directory));
    }
}

Answer 1

像这样，但这需要一些工作:

import java.io.*;
import java.util.*;
class FindFile 
{
    public String findFile(String name,File file) throws IOException
    {
        File[] list = file.listFiles();
        if (list != null)
        {
            for (File fil : list)
            {
                if (fil.isDirectory())
                {
                    return findFile(name,fil);
                }
                else if (name.equalsIgnoreCase(fil.getName()))
                {
                    return fil.getCanonicalPath();
                }
            }
        }
        return null;
    }

    public static void main(String[] args) throws IOException
    {
        FindFile ff = new FindFile();
        Scanner scan = new Scanner(System.in);
        System.out.println("Write the file you are trying to find:" );
        String name = scan.next();
        System.out.println("Write the directory where you want to search for the file");
        String directory = scan.next();
        String foundFile = ff.findFile(name,new File(directory));
        if (foundFile != null)
        {
            System.out.println("File was found in: " + foundFile);
        }
        else
        {
            System.out.println("File was not found");
        }

    }
}