A method for replicating directories in Java (recursive)

1     /**2 * Copy the target directory to the specified directory (can also be used to copy files)3      * @paramsrc Source Path4      * @paramdest Target Path5      * @throwsIOException6      */7      Public Static voidCopydir (file src, file dest)throwsIOException {8         if(!src.exists ()) {//Check if the source path exists9System.out.println ("Source directory does not exist!"));Ten}Else if(Src.isfile ()) {//if the source path is a file One             if(Dest.isdirectory ()) { A                 //cannot copy files to a directory -SYSTEM.OUT.PRINTLN ("Destination path is not a file!")); -}Else { the                 //Copying Files -FileInputStream FIS =NewFileInputStream (SRC); -FileOutputStream fos =NewFileOutputStream (dest); -                 byte[] arr =New byte[1024 * 8]; +                 intLen; -                  while(len = Fis.read (arr))! =-1) { +Fos.write (arr, 0, Len); A                 } at fis.close (); - fos.close (); -             } -}Else{//if the source path is a directory -             if(Dest.isfile ()) { -                 //cannot copy directory to a file inSYSTEM.OUT.PRINTLN ("Destination path is not a directory!")); -}Else { to                 //first check if the target exists, does not exist, creates +                 if(!dest.exists ()) { - dest.mkdirs (); the                 } *                 //If the destination path is a directory, recursively call this method for replication $                 //get the child files/directories of the source directoryPanax Notoginsengstring[] Subfiles =src.list (); -                 //traverse the source directory for replication the                  for(String subfile:subfiles) { +Copydir (NewFile (SRC, subfile),NewFile (dest, Subfile)); A                 } the             } +         } -     } $  $ /** - * Test Code -      * @paramargs the      * @throwsIOException -      */Wuyi      Public Static voidMain (string[] args)throwsIOException { theScanner sc =NewScanner (system.in); -System.out.println ("Please enter source path:"); WuString src =sc.nextline (); -System.out.println ("Please enter the target path:"); AboutString dest =sc.nextline (); $Copydir (NewFile (SRC),NewFile (dest)); -}

A method for replicating directories in Java (recursive)