处理目录和目录树

遍历目录java.nio.file.DirectoryStream接口

public class WalkDirDemo {
    public static void main(String[] args) {
        Path dir = Paths.get("D:/java/ebook/");
        //返回经过过滤的DirectoryStream，其中包含.wmv结尾的文件
        try (DirectoryStream<Path> stream = Files.newDirectoryStream(dir, "*.wmv")) {
            for (Path path : stream) {
                System.out.println(path.getFileName());
            }
        } catch (IOException e) {
            System.out.println(e.getMessage());
        }
    }
}

遍历整个目录树

public class WalkDirDemo {
    public static void main(String[] args)throws IOException {
        Path path = Paths.get("D:/work/zk/opensource/javase/ThinkingInJava");

        Files.walkFileTree(path, new SimpleFileVisitor<Path>(){
            @Override
            public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
                if(file.toString().endsWith(".java")){
                    System.out.println(file.getFileName());
                }
                return FileVisitResult.CONTINUE;
            }
        });
    }
}