import java.io.File; public class FileDemo { public static final String SPACE = " "; public static void main(String[] args) { File pathname = new File("F:\\IdeaProjects\\JavaSE"); listDir(pathname, 0); } /** * 递归打印所有文件和子文件夹的内容 * @param pathname File object * @param count int */ public static void listDir(File pathname, int count) { File[] files = pathname.listFiles(); if (files != null) { for (File file : files) { // 显示目录层次所需空格 StringBuilder sb = new StringBuilder(); for (int i = 0; i < count; i++) { sb.append(SPACE); } String prefix = sb.toString(); if (file.isDirectory()) { System.out.println(prefix + file.getName() + "\\"); listDir(file, count + 2); } else { System.out.println(prefix + file.getName()); } } } } }
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