java - 如何从Java读取文件夹中的所有文件？(How to read all files in a folder from Java?)

Question

如何通过Java读取文件夹中的所有文件？

  ask by M.J. translate from so

Answer 1

public void listFilesForFolder(final File folder) {
    for (final File fileEntry : folder.listFiles()) {
        if (fileEntry.isDirectory()) {
            listFilesForFolder(fileEntry);
        } else {
            System.out.println(fileEntry.getName());
        }
    }
}

final File folder = new File("/home/you/Desktop");
listFilesForFolder(folder);

Files.walk API is available from Java 8.

(Java 8提供了Files.walk API。)

try (Stream<Path> paths = Files.walk(Paths.get("/home/you/Desktop"))) {
    paths
        .filter(Files::isRegularFile)
        .forEach(System.out::println);
} 

The example uses try-with-resources pattern recommended in API guide.

(该示例使用API??指南中推荐的try-with-resources模式。)

It ensures that no matter circumstances the stream will be closed.

(它确保在任何情况下都将关闭流。)