How to create a directory and delete a directory on disk in a Java program
Last Update:2018-07-27
Source: Internet
Author: User
Import java.io.*; import java.util.*; public class Fileoperator { &NB Sp Public Fileoperator () { } &NBSP ; /** * features: Mobile files (only mobile files) * parameters: STRSOURCEFILENAME: Specified file full path name * & nbsp Strdestdir: move to specified Folder * return value: If successful true; otherwise, false &N Bsp * public Boolean CopyTo (String Strsourcefilename, & nbsp &NB Sp String Strdestdir) { &NB Sp File Filesource = new file (strsourcefilename); File filedest = N EW File (STRDESTDIR); &NB Sp // If source files are not saved or source files are folders if (! Filesource.exists () | | !filesource.isfile ()) { SYSTEM.OUT.PRINTLN ("Error: Fileoperator.java CopyTo function,/n reason: source file[" + Strsourcefilename + "], no presence or folder! "); return false; & nbsp // If destination folder does not exist &NB Sp if (!filedest.isdirectory () | | !filedest.exists ()) & nbsp { if (!FILEDEST.M Kdirs ()) { SYSTEM.OUT.PRINTLN ("Error: Fileoperator.java CopyTo function,/n Reason: Directory folder does not exist, failed to create target folder!"); return false; } & nbsp & nbsp Try { &NBS P String strabsfilename = Strdestdir + FILE.SEP Arator + filesource.getname (); &NB Sp FileInputStream F Ileinput = new FileInputStream (strsourcefilename); FileOutputStream fileoutput = New FileOutputStream (strabsfilename); &NB Sp //SYSTEM.OUT.PRINTLN ("Start copying file:"); &NB Sp int I &NBS P = 0; int Count = -1; &NBSp LON G nwritesize = 0; long &NBSP ; nfilesize = filesource.length (); &NB Sp byte[] data &NBSP ; = new Byte[buffer]; &NB Sp //SYSTEM.OUT.PRINTLN ("FILE NAME /T/T & nbsp FILE SIZE ");   SYSTEM.OUT.PRINTLN (Filesource.getname () + "/t /T " + nfilesize + " byte "); &NB Sp while ( -1 != (count = &N Bsp Fileinput.read (data, 0, BUFFER)) { &N Bsp &NB Sp fileoutput.write (data, 0, count); &NB Sp &NBSp nwritesize + = count; &NB Sp &NB Sp Long size = (nwritesize * )/nfilesize; &NB Sp Long T = nwritesize; &NB Sp &NB Sp String MSG = NULL; &NBSP &NB Sp If (size <= && size >= &nbs P 0 { &NBSP ; MSG = "/R Copy File progress: " + size + % /T " + "/ has been copied: " + "; &NB Sp System.out.print (msg); &NB Sp } Else if (size > ) { &NB Sp MSG = "/R copy File progress: " + + "% /T " + "/ copy: " + T &NB Sp System.out.print (msg); &NB Sp } & nbsp & nbsp &NB Sp fileinput.close (); fileoutput.close (); &NB Sp SYSTEM.OUT.PRINTLN ("/n Copy File Success!"); return true; &NB Sp } catch (Exception e) { &NBSP;SYSTEM.OUT.PRINTLN ("Abnormal letter") Interest: ["); e.printstacktrace (); SYSTEM.OUT.PRINTLN ("Exception information ：]"); &NBSP return false; { } /** &NBSP ; * Work can: Delete specified file * parameter Number: designation Absolute path filename strFileName * return value: If Delete succeeds true otherwise false; / public Boolean Delete (String strFileName) { & nbsp file filedelete = new File (strFileName); &NB SP If (!filedelete.exists () | | !filedelete.isfile ()) { SYSTEM.OUT.PRINTLN ("Error: " + STR FileName + "does not exist!"); return false; & nbsp return filedelete.delete (); & nbsp /** * features: Mobile files (only mobile files) * parameters: Strsourcefilename: is the specified file full path name &NBSp * Strdestdir: &NB Sp move to specified folder * &nbs P Return value: If success is true; Otherwise false / public Boolean moveFile (String strsourcefilename, & nbsp &NB Sp String Strdestdir) &NBSP ; { if (CopyTo strsourcefilename, Strdestdir) &NBSp return this.delete (strsourcefilename); else &NBSP ; return false; & nbsp /** * function: Create folder * parameters: strdir The folder name to be created * return value: If successful true; otherwise false , * public Boolean MakeDir (String strdir) &NBS P { File filenew =   New File (Strdir); &NB Sp If (!filenew.exists ()) & nbsp return filenew.mkdirs (); else &NBSP ; return true; & nbsp /** * function: Delete folder * parameters: strdir The folder name to delete * return value: If success true; false &NB Sp * public Boolean rmdir (String strdir) { File RM Dir = new File (Strdir); if (Rmdir.isdirectory () && &NB Sp Rmdir.exists ()) { String[] filelist = rmdir.list (); &NB Sp int Size & nbsp = Filelist.length; &NBSP for (int i = 0; I < filelist.length;   ; i++) { &NB Sp String subfile = Strdir + File.separator + filelist[ I]; &NB Sp File TMP = new File (subfile); &NB Sp If (Tmp.isfile ()) tmp.delete (); &NB Sp Else IF (Tmp.isdirectory ()) rmdir (subfile); &NB Sp else &NBSP ; SYSTEM.OUT.PRINTLN ("error!"); } & nbsp rmdir.delete (); { Else return false; return true; & nbsp // member variable private final int BUFFER = 1024; // member variable   ; class Test { public &N Bsp static void Main (string[] args) { &NBS P }
