输出的结构类似于linux下的tree命令如下：

原创不易，转载请注明出处:java打印文件树的代码

package com.zuidaima.file;

import java.io.File;
import java.util.Arrays;

import org.junit.Test;

public class ListDir2 {
	int indentLevel = -1;
	String htmlPath = "";

	@Test
	public void listPath() {
		File path = new File("C:/zuidaima/");
		listPath(path);
	}

	public void listPath(File path) {
		File files[];
		indentLevel++;
		files = path.listFiles();
		Arrays.sort(files);
		for (int i = 0, n = files.length; i < n; i++) {
			for (int indent = 0; indent < indentLevel; indent++) {
				System.out.print("  ");
			}
			File file = files[i];
			if (file.isDirectory()) {
				System.out.println(file.getAbsolutePath());
			} else {
				System.out.println(file.getName());
			}
			if (files[i].isDirectory()) {
				listPath(files[i]);
			}
		}
		indentLevel--;
	}
}

 代码下载地址： http://www.zuidaima.com/share/1550463223532544.htm