java程序的递归算法，列出某个目录下的所有子目录和文件

java 代码

package guo;

import java.io.File;

public class FileDemo {

    /**
     * @param args
     */

    public static void listFile(String path, int space) {
        File file = new File(path);
        if (file.isFile()) {
            for (int i = 0; i < space; i++) {
                System.out.print(" ");
            }
            System.out.println("--" + file.getName());
        } else {

            for (int i = 0; i < space; i++) {
                System.out.print(" ");
            }
            space += space;
            System.out.println("--" + file.getName());
            File files[] = file.listFiles();
            for (int i = 0; i < files.length; i++) {

                listFile(files[i].getPath(), space);
            }

        }
    }

    public static void main(String[] args) {
        FileDemo.listFile("C:", 1);

    }

}