java--using recursion and IO streams for file replication

1 import Java.io.ByteArrayInputStream;2 import Java.io.ByteArrayOutputStream;3 import Java.io.File;4 import Java.io.FileInputStream;5 import Java.io.FileOutputStream;6 import java.io.IOException;7 import Java.io.InputStream;8 import Java.io.OutputStream;9 Ten /** One * Copy of File: A * Idea: By recursively implementing the file directory replication, through the stream to copy files.  - * Method: - * 1. Traverse directories and files and, if directory, first copy the directory and its subdirectories to the specified directory.  the * 2. If a non-directory copies the files in the directory to the specified directory in the form of a stream.  - * 3. Call your own method to implement recursion.  - * 4. So that all subdirectories and files under the directory and its directory are replicated to the specified directory.  - * Technology used: + * Use the file class to replicate the files directory. IO stream for copying of file text - * @author User +  * A  */ at  -  Public classCopyfiletest { -  -      Public Static voidMain (string[] args) { -String Srcpath ="E:\\WORKSPACES\\DAY16"; -String DestPath ="F:\\WORKSPACES\\DAY16"; inFile src =NewFile (Srcpath);//source File -File dest =NewFile (DestPath);//destination File to          +         Try { - copyfolder (SRC, dest); the}Catch(IOException e) { *             //TODO auto-generated Catch block $ e.printstacktrace ();Panax Notoginseng         } -System. out. println ("Program Execution Complete"); the     } +      A     Private Static voidcopyfolder (file src, file dest) throws IOException { the         if(Src.isdirectory ()) {//Interpreting whether the table of contents +             if(!dest.exists ()) {//determine if the path name exists -Dest.mkdirs ();//Create a file directory and its subdirectories $             } $             //src.list () returns an array of strings that specify the files and directories in the directory represented by this abstract path name.  -String files[] = Src.list ();//create a string array to store the file path -             //traversing file Directories the              for(String file:files) { -                 //creates a new File instance based on the parent abstract pathname and child pathname stringWuyiFile Srcfile =Newfile (src, file); theFile DestFile =Newfile (dest, file); -                 //Recursive replication Wu CopyFolder (Srcfile, destfile); -             } About}Else { $             //creating a Stream object -InputStreaminch=NewFileInputStream (SRC); -OutputStream out=NewFileOutputStream (dest); -              A             //Create a byte array to be used as a buffer +             byte[] buffer =New byte[1024x768]; the              -             //adding data to the buffer array $             inch. Read (buffer); the              the             //load data into the cache theBytearrayinputstream bis =Newbytearrayinputstream (buffer); the              -             //Instantiate a Bytearrayoutputstream inBytearrayoutputstream BOS =NewBytearrayoutputstream (); the              the             //defining a String data AboutString str =bis.tostring (); the             //define a byte[] array the             byte[] B =str.getbytes (); the             //Copy the contents of B to a buffer +Bos.write (b,0, b.length); -             //gets the size of the current buffer theSystem. out. println (Bos.size ());Bayi      the             //writes the data of the buffer to the OutputStream theBos.writeto ( out); -              -             //Close the stream the             inch. Close (); the              out. Close (); the         } the     } -  the}

java--using recursion and IO streams for file replication