Java組建檔案樹__Java

自己用Java寫的類似於Linux tree命令組建檔案樹，直接上代碼吧

import java.io.*;import java.util.Arrays;/** * Created by su123 on 2017/4/9. */public class fileIO {    public static void main(String[] args)  {        File file = new File("D:\\apache-tomcat-7.0.77-windows-x64");        File dest = new File("dco.txt");        BufferedWriter out = null;              out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(dest,true)));                listPath(file,out);            }    static int indentLevel = -1;    public static void listPath(File path,BufferedWriter out) {        File files[];        indentLevel++;        files = path.listFiles();        Arrays.sort(files);        try{            for (int i = 0, n = files.length; i < n; i++) {                File file = files[i];                if (file.isDirectory()){                    System.out.print("|");                    out.write("|");                    for (int indent = 0; indent < indentLevel; indent++) {                        System.out.print("--");                        out.write("--");                    }                }else{                    for (int indent = 0; indent < indentLevel; indent++) {                        System.out.print("  ");                        out.write("  ");                    }                    System.out.print("|--");                    out.write("|--");                }                if (file.isDirectory()) {                    System.out.println("d:"+file.getName());                    out.write("d:"+file.getName());                    out.newLine();                } else {                    System.out.println("f:"+file.getName());                    out.write("f:"+file.getName());                    out.newLine();                }                if (files[i].isDirectory()) {                    listPath(files[i],out);                }            }        }catch (IOException e){            e.printStackTrace();        }        indentLevel--;    }}