Java implementation read and delete files under a folder

This article to share is the Java implementation read, delete files under the folder, where File.delete () used to delete "a file or an empty directory"! So to delete a directory and all the files and subdirectories in it, to be recursive delete, the need for small partners to refer to.

Java implementation read and delete files under a folder

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Package test.com;   Import Java.io.File; Import java.io.FileNotFoundException; Import java.io.IOException;   public class ReadFile {public ReadFile () {}/** * read all files under a folder */public static Boolean ReadFile (String filepath Throws FileNotFoundException, IOException {try {  file = new file (filepath); if (!file.isdirectory ()) {//S Ystem.out.println ("document"); System.out.println ("path=" + File.getpath ()); System.out.println ("absolutepath=" + File.getabsolutepath ()); System.out.println (File.getname ());  } else if (File.isdirectory ()) {string[] filelist = File.list (); for (int i = 0; i < filelist.length; i++) {Fi Le ReadFile = new File (filepath + "" + filelist[i]); if (!readfile.isdirectory ()) {//System.out.println ("path=" + Readfile.getpath ());//System.out.println (" Absolutepath= "//+ Readfile.getabsolutepath ()); System.out.println (Readfile.getname ());  } else if (Readfile.isdirectory ()) {ReadFile (filepath + "" + Filelist[i]);}  } &nbsp catch (FileNotFoundException e) {System.out.println ("ReadFile () Exception:" + e.getmessage ());} return true; }  /** * Delete all folders and files under a folder * *    /*public static Boolean DeleteFile (String delpath) throws Filenotfoundex Ception, IOException {try {  file = new file (Delpath); if (!file.isdirectory ()) {System.out.println ("1"); fil E.delete (); else if (file.isdirectory ()) {System.out.println ("2"); string[] filelist = File.list (); for (int i = 0; i < filelist.length i++) {file Delfile = new File (Delpath + "" + filelist[i]); if (!delfile.isdirectory ()) {System.out.println ("path=" + Delfile.getpath ()); System.out.println ("absolutepath=" + Delfile.getabsolutepath ()); System.out.println ("name=" + delfile.getname ()); Delfile.delete (); System.out.println ("Delete file succeeded"); else if (delfile.isdirectory ()) {DeleteFile (Delpath + "" + Filelist[i]);} File.delete ();  }  } catch (FileNotFoundException e) {System.out.println ("DeleteFile () Exception:" + E.getmessage ()); return true; }*/  public static void main (string[] args) {try {ReadFile ("c:usersswdesktopskj_h25 patch 04_rcag03_skj");//Deletefil E ("D:/file"); The catch (FileNotFoundException ex) {} catch (IOException ex) {} System.out.println ("OK"); }  }

Method Two:

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Package otherstudy;   Import Java.io.File; Import java.io.FileNotFoundException; Import java.io.IOException;  /** * @ClassName: Testreadfile * @CreateTime: Aug 1, 2014 11:42:44 AM * @Author: Mayi * @Description: Read and delete all text under folder * */public class Testreadfile {/** * acquisition of the Webroot of the Project absolute path * @return/String GetProjectPath () {//Get form like "/d:/${workspace}/$" {projectname}/webroot/web-inf/classes/path String path=this.getclass (). GetResource ("/"). GetPath (); Remove the engineering path from the path string path=path.substring (1, Path.indexof ("web-inf/classes")); SYSTEM.OUT.PRINTLN ("Engineering Path:" +path); return path; }/** * @param args */public static void main (string[] args) {testreadfile trf=new testreadfile (); String Xmlpath = Trf.getprojectpath () + "Testdocs"; try {readallfile (xmlpath);} catch (FileNotFoundException e) {e.printstacktrace ();} catch (IOException e) {E.printstac Ktrace (); /** * Reads all files under the specified path folder * @param filepath * @return * @throws filenotfoundexception * @throws ioexception/Public stat IC Boolean ReadAllfile (String filepath) throws FileNotFoundException, IOException {try {File file = new file (filepath); if (!file.isdir Ectory ()) {System.out.println ("N File Information:"); System.out.println ("t relative path =" + File.getpath ()); System.out.println ("t absolute path =" + File.getabsolutepath ()); System.out.println ("t file Full name =" + File.getname ());  } else if (File.isdirectory ()) {System.out.println ("N Folder file list information:"); file[] filelist = File.listfiles (); for (int i = 0; i < filelist.length i++) {File ReadFile = filelist[i]; if (!readfile.isdirectory ()) {System.out.prin TLN ("nt Relative path =" + Readfile.getpath ()); System.out.println ("t absolute path =" + Readfile.getabsolutepath ()); System.out.println ("t file Full name =" + Readfile.getname ()); else if (readfile.isdirectory ()) {Readallfile (Filelist[i].getpath ());}} } catch (FileNotFoundException e) {System.out.println ("ReadFile () Exception:" + e.getmessage ());} return true;  /** * Delete all folders and files under a folder * @param delpath * @return * @throws filenotfoundexception * @throws IOException/public static Boolean DeleteFile (String delpath) throws FileNotFoundException, IOException {try {File file = new file (Delpath); if (!file.isdirectory ()) {System.out.println ("1"); File.delete ();} else if (File.isdirectory ()) {System.out.println (" 2 "); file[] filelist = File.listfiles (); for (int i = 0; i < filelist.length i++) {File delfile = filelist[i]; if (!delfile.isdirectory ()) {System.out.printl N ("Relative path =" + Delfile.getpath ()); SYSTEM.OUT.PRINTLN ("absolute path =" + Delfile.getabsolutepath ()); System.out.println ("file Full name =" + Delfile.getname ()); Delfile.delete (); System.out.println ("Delete file succeeded"); else if (delfile.isdirectory ()) {DeleteFile (Filelist[i].getpath ());}} File.delete (); } catch (FileNotFoundException e) {System.out.println ("DeleteFile () Exception:" + e.getmessage ());} return true; } }

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