Question

//该方法不在控制台中运行。我试图在main中初始化它，但没有任何效果目的是编写一个递归方法查找并列出目录和子目录，并在没有目录时停止。

package Folders;

import java.io.File;
//lists
//isFile
/**/

public class Main {

    public static void main(String[] args) {
        // Object directoryName;
        // TODO Auto-generated method stub
        // String listFilesAndFilesSubDirectories a = new
        // listFilesAndFilesSubDirectories();
        /*
         * listFilesAndFilesSubDirectories a = new
         * listFilesAndFilesSubDirectories(); System.out.println(); File file1 =
         * new File("C:\\"); String[] files = file1.list(); for(String string :
         * files) { System.out.println(string); }
         */
    }

    public class listFilesAndFilesSubDirectories {
        public void listFilesAndFilesSubDirectories(String directoryName) {
            // directoryName = "C:\\";
            File file1 = new File("C:\\");
            String[] files = file1.list();
            for (String string : files) {
                System.out.println(string);
            }
            File directory = new File(directoryName);

            // get all the files from a directory
            File[] fList = directory.listFiles();
            for (File file : fList) {
                if (file.isFile()) {
                    System.out.println(file.getAbsolutePath());
                    System.out.println("fdadfa");
                } else if (file.isDirectory()) {
                    listFilesAndFilesSubDirectories(file.getAbsolutePath());
                } else {
                    break;
                }
            }
        }
    }
}

Answer 1

要在目录中递归打印文件名，请按以下方式更改方法： -

public static void listFilesAndFilesSubDirectories(File directoryName) throws Exception {

    for(File file : directoryName.listFiles()) {
        if(file.isDirectory())
            listFilesAndFilesSubDirectories(file);
        else if(file.isFile())
            System.out.println(file.getName());
    }
}

java中的递归目录列表

1 个答案: