Java 如何遞歸讀取文件

Question

我想讀取給定路徑內的所有遞歸文件，並在每個文件的 output 中顯示路徑和字節大小。

Answer 1

public class ReadFilesInPathRecursion {

public void listFiles (String startDir) {
    File dir = new File(startDir);
    File[] files = dir.listFiles();
    
    if (files!=null && files.length >= 0) {
        for(File file : files) {
            
            if(file.isDirectory()) {
                listFiles(file.getAbsolutePath()); // Recursion (absolute)
            } else {
                System.out.println(file.getName() + " (size in bytes: " + file.length() + ") " + "(path: " + file.getAbsoluteFile() + ")");
            }
            
        }
    }
    
}

public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    ReadFilesInPathRecursion test = new ReadFilesInPathRecursion();
    String startDir = sc.next();
    test.listFiles(startDir);
    }