Gets a collection of desired specified files, gets the folder (all. Java file objects that contain subdirectories, and stores them in the collection)

import java.io.file;import Java.io.filefilter;import Java.io.objectinputstream.getfield;import Java.util.arraylist;import Java.util.list;public class Huoquwenjian {/*  Gets a collection of desired specified files, gets the folder (all the. Java file objects that contain subdirectories, and stores them in the collection) * Idea: * 1, since the inclusion of subdirectories, you need recursion. * 2, in the recursive process need filter * 3, meet the conditions, are added to the collection *//** * @param args */public static void main (string[] args) {//TODO auto-generated Me               Thod stub file dir = New file ("E:\\java file");               list<file> list = new arraylist<file> ();               FileFilter filterbyjava=new Filterbyjava (". Java");               Getfilelist (Dir,list,filterbyjava);               for (File list1:list) {System.out.println (list1); }}private static void Getfilelist (File dir, list<file> list,filefilter Filterbyjava) {file[] files = dir.listfiles ( ); for (file file:files) {if (File.isdirectory ()) {getfilelist (file, list, Filterbyjava);} else{if (filterbyjava.accept (file)) {list.add (file);}}}} 

Filter class

Import Java.io.file;import Java.io.filefilter;public class Filterbyjava implements FileFilter {public String suffix; Public Filterbyjava (String suffix) {super (); this.suffix = suffix;} @Overridepublic Boolean Accept (File pathname) {//TODO auto-generated method Stubreturn pathname.getname (). EndsWith ( suffix);}}



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Gets a collection of desired specified files, gets the folder (all. Java file objects that contain subdirectories, and stores them in the collection)