Copy of Folder

Ways to reference notes, "Implementation of file copy"

1  　　  Public Static voidcopydirectory (File src,file dest) {2         if(Src.isdirectory ()) {3dest=NewFile (Dest,src.getname ());//Create the SRC folder under the Dest folder4         }5 copydir (SRC, dest);6     }7      Public Static voidcopydir (File src,file dest) {8         9         if(Src.isdirectory ()) {Ten dest.mkdirs (); One              for(File sub:src.listFiles ()) { ACopyDirectory (Sub,NewFile (Dest,sub.getname ())); -             } -}Else if(Src.isfile ()) { the copyFile (SRC, dest); -         } -}

A (source folder) B (destination folder)     /    \b C     |D.txtSuppose at this point, to copy the A folder to the B folder1. What does the Copydir () method do for you? A : In order to copy a (folder), it is only used to copy a, do not include a folder inside the B/c/d.txt and other files. if Copydir () is not called, then the contents of the B folder will be:B                                   /    \b C                                   |D.txtthe result of calling Copydir () is:                     B                                      |A                                   /    \b C                                   |D.txtFull code:

1  Packagecom. IO;2 ImportJava.io.*;3  Public classCopyutil {4     /**5 * Copy Folder6      * @paramsrc7      * @paramdest8      */9      Public Static voidCopyDirectory (String srcpath,string destpath) {//overloaded CopyDirectory () methodTenFile src=NewFile (srcpath); OneFile dest=NewFile (destpath); A copydirectory (SRC, dest); -     } -      Public Static voidcopydirectory (File src,file dest) { the         if(Src.isdirectory ()) { -dest=NewFile (Dest,src.getname ());//create a file with the same name as SRC under the dest directory -         } - copydir (SRC, dest); +     } -      Public Static voidcopydir (File src,file dest) { +         if(Src.isdirectory ()) { A dest.mkdirs (); at              for(File file:src.listFiles ()) { -Copydir (file,NewFile (Dest,file.getname ()));//Focus!!  -             } -}Else if(Src.isfile ()) { - copyFile (SRC, dest); -         } in     } -     /** to * Copy Files +      * @paramsrc -      * @paramdest the      */ *      Public Static voidcopyFile (String srcpath,string destpath) { $File src=NewFile (srcpath);Panax NotoginsengFile dest=NewFile (destpath); - copyFile (SRC, dest); the     } +      Public Static voidcopyFile (File src,file dest) { ABufferedinputstream bis=NULL; theBufferedoutputstream BOS =NULL; +         Try { -bis =NewBufferedinputstream (NewFileInputStream (SRC)); $BOS =NewBufferedoutputstream (NewFileOutputStream (dest)); $             byte[] flush=New byte[1024]; -             intlen=0;//the actual length of data obtained -              while( -1!= (len=Bis.read (flush))) { theBos.write (flush);//Write Data -             }Wuyi Bos.flush (); the}Catch(FileNotFoundException e) { -SYSTEM.OUT.PRINTLN ("File not Found"); Wu e.printstacktrace (); -}Catch(IOException e) { AboutSystem.out.println ("Read stream failed"); $ e.printstacktrace (); -}finally{ -              -             Try { A                 if(NULL!=Bos) { + bos.close (); the                 } -                 if(NULL!=bis) { $ bis.close (); the                 } the}Catch(IOException e) { theSystem.out.println ("Shutdown stream failed! "); the e.printstacktrace (); -             } in              the         } the     } About}

Copy of Folder