使用 Java 在文件夹中查找文件

问题描述

如果搜索文件夹说C:example

然后我需要遍历每个文件并检查它是否与几个开始字符匹配，因此文件是否开始

I then need to go through each file and check to see if it matches a few start characters so if files start

temp****.txt
tempONE.txt
tempTWO.txt

因此，如果文件以 temp 开头且扩展名为 .txt，我想将该文件名放入 File file = new File("C:/example/temp***.txt); 所以我可以读入文件，然后循环需要移动到下一个文件来检查它是否满足上述要求.

So if the file starts with temp and has an extension .txt I would like to then put that file name into a File file = new File("C:/example/temp***.txt); so I can then read in the file, the loop then needs to move onto the next file to check to see if it meets as above.

推荐答案

你想要的是 File.listFiles(FileNameFilter filter).

What you want is File.listFiles(FileNameFilter filter).

这会给你一个目录中与特定过滤器匹配的文件列表.

That will give you a list of the files in the directory you want that match a certain filter.

代码将类似于:

// your directory
File f = new File("C:\example");
File[] matchingFiles = f.listFiles(new FilenameFilter() {
    public boolean accept(File dir, String name) {
        return name.startsWith("temp") && name.endsWith("txt");
    }
});

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