在控制台，递归显示文件夹下所有文件目录代码+ 运行结果

package TestFile;/*
 * zt
 * 2020/8/6
 * 17:46
 *递归显示文件夹
 */

import java.io.File;

public class Demo1 {
    public static void main(String[] args) {
        listDir(new File("e:\\aaa"), 0);
    }
    public static void listDir(File dir,int level){
        System.out.println(getSeprator(level)+dir.getAbsolutePath());
        level++;
        File[] files = dir.listFiles();

        if(files != null && files.length > 0){
            for (File file : files) {
                if(file.isDirectory()){
                    listDir(file,level);
                }else{
                    System.out.println(getSeprator(level)+file.getAbsolutePath());
                }
            }
        }
    }

    //空格
    public static String getSeprator(int level){
        StringBuilder sb = new StringBuilder("|");
        for (int i = 0; i < level; i++) {
            sb.append("----");
        }
        return sb.toString();
    }

}

|e:\aaa
|----e:\aaa\aa - 副本 (2).ppt
|----e:\aaa\aa - 副本.ppt
|----e:\aaa\aa.ppt
|----e:\aaa\bbb
|--------e:\aaa\bbb\bbb.ppt
|--------e:\aaa\bbb\ccc
|------------e:\aaa\bbb\ccc\dasd.ppt
|--------e:\aaa\bbb\hello

Process finished with exit code 0