获得一个path下文件个数和大小删除指定path下的文件.doc

package com.nwx233135.delete; import java.io.File; import java.text.DecimalFormat; import java.io.FileInputStream; public class GetFileSize { // 递归取得文件夹（包括子目录）中所有文件的大小 public long getFileSize(File f)throws Exception//取得文件夹大小 { long size = 0; File flist[] = f.listFiles(); for (int i = 0; i flist.length; i++) { if (flist[i].isDirectory()) { size = size + getFileSize(flist[i]); } else { size = size + flist[i].length(); } } return size; } //转换文件大小 public String FormetFileSize(long fileS) { DecimalFormat df = new DecimalFormat(#.00); String fileSizeString = ; if (fileS 1024) { fileSizeString = df.format((double) fileS) + B; } else if (fileS 1048576) { fileSizeString = df.format((double) fileS / 1024) + K; } else if (fileS 1073741824) { fileSizeString = df.format((double) fileS / 1048576) + M; } else { fileSizeString = df.format((double) fileS / 1073741824) + G; } return fileSizeString; } //递归求取目录文件个数 public long getlist(File f){ long size = 0; File flist[] = f.listFiles(); size=flist.length; for (int i = 0; i flist.length; i++) { if (flist[i].isDirectory()) { size = size + getlist(flist[i]); size--; } } return size; } //递归求取目录中文件（包括目录）的个数 public long getDir(File f){ long size = 0; File flist[] = f.listFiles(); size=flist.length; for (int i = 0; i flist.length; i++) { if (flist[i].isDirectory()) { size = size + getDir(flist[i]); } } return size; } public static void main(String args[]) { GetFileSize g = new GetFileSize(); long startTi