java统计指定文件的大小以及包含的文件夹和文件数

package com.stone.caculator;import java.io.File;import java.text.DecimalFormat;import java.text.SimpleDateFormat;import java.util.Date;public class Caculator {int totalFolder = 0;int totalFile = 0;public static void main(String args[]) {String folder = "F:/movie";SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");System.out.println("统计日期："+sdf.format(new Date()));try {Caculator size = new Caculator();long fileSizeByte = size.getFileSize(new File(folder));DecimalFormat df=(DecimalFormat)DecimalFormat.getInstance();System.out.println("总文件夹数: "+ df.format(size.getTotalFolder()));System.out.println("总文件数: " + df.format(size.getTotalFile()));df.setGroupingSize(3);System.out.println("文件夹大小（单位字节）: " + df.format(fileSizeByte) + " Bytes");} catch (Exception e) {e.printStackTrace();}} public long getFileSize(File folder) {long foldersize = 0;File[] filelist = folder.listFiles();for (int i = 0; i < filelist.length; i++) {if (filelist[i].isDirectory()) {totalFolder++;foldersize += getFileSize(filelist[i]);} else {totalFile++;foldersize += filelist[i].length();}}return foldersize;}public int getTotalFolder() {return totalFolder;}public int getTotalFile() {return totalFile;}}

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