运用Java遍历文件夹的方法总结.doc

一般遍历文件效率较高的都是采用递归算法执行的，下面的是简单的递归调用实现文件遍历：package com.Interator;import java.io.File;import java.util.ArrayList;import java.util.List;public class InteratorFile private static List list=new ArrayList();public static void main(String args) / TODO Auto-generated method stub InteratorFile iFile=new InteratorFile(); File file=new File(E:war3); iFile.findFile(file,0); public void findFile(File file,int j)/传参数j的目的主要是体现文件的层次。 File files=file.listFiles(); if(files=null) return; else for (int i=0;ifiles.length;i+) if(filesi.isDirectory() findFile(filesi.getAbsoluteFile(),j+); else String path=filesi.getAbsolutePath(); for(int k=0;kj;k+) System.out.print(+); System.out.println(path); list.add(filesi.getAbsolutePath(); 一部分运行结果：E:war3Warcraft IIIamai_2.45bAMAI Debug Version.exeE:war3Warcraft IIIamai_2.45bAMAI vs AI.exeE:war3Warcraft IIIamai_2.45bAMAI_TFT.exe+E:war3Warcraft IIIblizzard.ax+E:war3Warcraft IIIbncache.dat+E:war3Warcraft IIIBNUpdate.exe+E:war3Warcraft IIIbnupdate.log+E:war3Warcraft IIICampaignsDemoCampaign.w3n+E:war3Warcraft IIICustomKeyInfo.txt+E:war3Warcraft IIICustomKeysSample.txt另一种就是不用递归算法，这种方式经测试要低于递归算法，实现如下：package com.text3;import java.io.File;import java.util.LinkedList;public class findFile public static void main(String args) / TODO Auto-generated method stub LinkedList list=new LinkedList(); File file=new File(E:war3); File files=file.listFiles(); for(int i=0;ifiles.length;i+) if(filesi.isDirectory() list.add(filesi); else System.out.println(filesi.getAbsolutePath(); File temp; while(!list.isEmpty() temp=(File)list.removeFirst(); int j=0; if(temp.isDirectory() files=temp.listFiles(); if(files!=null) for(int i=0;ifiles.length;i+) if(filesi.isDirectory() list.add(filesi); j+; else for(int k=0;kj;k+) System.out.print(+); System.out.println(filesi.getAbsolutePath(); else continue; else System.out.println(temp.getAbsolutePath(); 一部分运行结果：+E:war3Warcraft IIIbncache.dat+E:war3Warcraft IIIBNUpdate.exe+E:war3Warcraft IIIbnupdate.log+E:war3Warcraft IIICustomKeyInfo.txt+E:war3Warcraft IIICustomKeysSample.txt+E:war3Warcraft IIIFrozen Throne.exe+E:war3Warcraft IIIGame.dll+E:war