import java.io.File;
import java.util.ArrayList;
import java.util.List;

/**
 * Created by Administrator on 2019/2/10.
 */
public class TestWalkDir {

    static class FileComponent
    {
        File curFile;
        List<FileComponent> fileComponentList = new ArrayList<FileComponent>();

        public FileComponent(File file)
        {
            curFile = file;
            File[] childFiles = curFile.listFiles();
            if(null != childFiles && childFiles.length > 0) {
                for (File child : childFiles) {
                    FileComponent childFileComp = new FileComponent(child);
                    fileComponentList.add(childFileComp);
                }
            }
        }

        public FileComponent(String filePath)
        {
            this(new File(filePath));
        }

        public List<File> getAllFilesAndDirsList()
        {
            List<File> files = new ArrayList<File>();
            files.add(curFile);
            for (FileComponent child: fileComponentList)
            {
                files.addAll(child.getAllFilesAndDirsList());
            }
            return files;
        }
    }

    static class Tester
    {
        public static void main(String[] args) {
            FileComponent fileComponent = new FileComponent("F:\\root");
            List<File> files = fileComponent.getAllFilesAndDirsList();
            for (File file: files)
            {
                System.out.println(file);
            }
        }
    }

}