I/O Stream copying text

Package IO; import Java. io. bufferedinputstream; import Java. io. bufferedoutputstream; import Java. io. bufferedreader; import Java. io. bufferedwriter; import Java. io. file; import Java. io. fileinputstream; import Java. io. filenotfoundexception; import Java. io. fileoutputstream; import Java. io. filereader; import Java. io. filewriter; import Java. io. ioexception; import Java. io. inputstreamreader; import Java. io. outputstream Writer; public class Io stream {/*** @ Param ARGs */public static void main (string [] ARGs) {bufferedwr ();} Private Static void show (File file) {file [] filelist = file. listfiles (); For (file F: filelist) {If (F. isfile () {If (F. getname (). endswith (". TXT ") system. out. println (F. getname () ;}else {Show (f) ;}} Private Static void Delete (File file) {file [] filelist = file. listfiles (); For (file F: Filelist) {If (F. isfile () {f. delete () ;}else {Delete (f) ;}} file. delete ();} /*** abstract class byte stream read inputstream byte stream output outputstream ** internal stream read Reader internal stream output writer ** implementation class batearrayoutputstream fileoutputstream * constructor fileoutputstream (File file) fileoutputstream (string path) ** @ throws * // write a string to a file/*** append the file to fileoutputstream Fos = new fileoutputstream ("a.txt", tr UE); newline \ r \ n */public static void strtofile () {// create a byte output stream object string STR = "hello "; try {// file = new file ("D: \ a.txt"); // fileoutputstream FS = new fileoutputstream (File); fileoutputstream Fos = new fileoutputstream ("a.txt ", true); FOS. write ("Hello \ r \ nhello ". getbytes (); FOS. close ();} catch (exception e) {e. printstacktrace () ;}}/*** reads the file content and outputs it to the console */public static void readfromfile () {File = new file ("a.txt"); fileinputstream FCM = NULL; try {FD = new fileinputstream (File); byte [] bys = new byte [1024]; int Len = 0; while (LEN = Fi. read ())! =-1) {system. out. print (char) Len) ;}} catch (exception e) {e. printstacktrace ();} finally {try {FCM. close ();} catch (ioexception e) {e. printstacktrace () ;}}/ *** copy a text file from a.txt to B .txt **/public static void copybyte () {try {fileinputstream is = new fileinputstream ("a.txt "); fileoutputstream OS = new fileoutputstream ("B .txt"); int Len = 0; byte [] bys = new byte [1024]; while (LEN = I S. Read (bys ))! =-1) {OS. write (bys, 0, Len);} OS. close (); is. close ();} catch (exception e) {e. printstacktrace ();} finally {}}/*** bufferedoutputstream buffer output */public static void bufferedoutputdemo () {try {fileoutputstream Fos = new fileoutputstream ("a.txt "); fileinputstream FCM = new fileinputstream ("B .txt"); bufferedoutputstream Bos = new bufferedoutputstream (FOS); bufferedinputstream Bis = New Buffer Edinputstream (FCM); int Len = 0; byte [] bys = new byte [1024]; while (LEN = bis. Read (bys ))! =-1) {Bos. write (bys, 0, Len);} Bos. close (); FOS. close ();} catch (exception e) {e. printstacktrace () ;}}/*** outputstreamwriter (file, character) is the conversion of stream bytes + encoding method ** inputstreamwriter (file, character) is the conversion stream byte + encoding method ** flush () method to refresh the buffer * // *** streams copy file */public static void copyzifuliu () {try {outputstreamwriter OSW = new outputstreamwriter (New fileoutputstream ("a.txt"); inputstreamreader oiw = ne W inputstreamreader (New fileinputstream ("c.txt"); int Len = 0; char [] B = new char [1024]; while (LEN = oiw. read (B ))! =-1) {OSW. write (B, 0, Len); OSW. flush ();} OSW. close (); oiw. close ();} catch (exception e) {e. printstacktrace () ;}/ *** filewriter = fileoutputstream + encoding filereader = fileinputstream + encoding */public static void copyrw () {try {filereader reader = new filereader ("a.txt"); filewriter writer = new filewriter ("d.txt"); int Len = 0; char [] C = new char [1024]; while (LEN = reader. read (c ))! =-1) {writer. write (C, 0, Len); writer. flush ();} writer. close (); reader. close ();} catch (exception e) {// todo auto-generated Catch Block E. printstacktrace () ;}/ *** bufferedwriter (writer out) * bufferedreader (reader read) * special method of Character Buffer stream: * newline (): determined by the system line feed * Readline (): one row of data read */public static void bufferedwr () {try {// bufferedwriter BW = new bufferedwriter (New outputstreamwriter (new F Ileoutputstream ("e.txt"); bufferedwriter BW = new bufferedwriter (New filewriter ("e.txt ")); // bufferedreader BR = new bufferedreader (New inputstreamreader (New fileinputstream ("a.txt"); bufferedreader BR = new bufferedreader (New filereader ("a.txt ")); // int Len = 0; string S = NULL; char [] C = new char [1024]; while (S = (BR. readline ()))! = NULL) {// BW. write (C, 0, Len); // BW. flush (); BW. write (s); BW. newline (); BW. flush ();} BW. close (); BR. close ();} catch (exception e) {e. printstacktrace ();}}}

 

I/O Stream copying text