JavaSE8 basic BufferedReader char[] way Read-write implementation copy and paste TXT file

Os:windows7 x64
Jdk:jdk-8u131-windows-x64
Ide:eclipse Oxygen Release (4.7.0)

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Code

Package Jizuiku0;import Java.io.bufferedreader;import Java.io.bufferedwriter;import java.io.fileinputstream;import Java.io.fileoutputstream;import Java.io.ioexception;import Java.io.inputstreamreader;import java.io.outputstreamwriter;/* * @version V17.09 */public class Bufferedarraycopy {//I use throws here in order to easily read the code//However in the project You still need to use the try: The catch handles the exception accordingly public static void main (string[] args) throws IOException {//File source String pathname = "hello.txt";//relative path Piece path String charsetname = "UTF-8"; Specifies the character set BufferedReader br = new BufferedReader (new InputStreamReader (New FileInputStream (pathname), charsetname));// File Destination String newpathname = "NewWorld.txt"; BufferedWriter bw = new BufferedWriter (new OutputStreamWriter (New FileOutputStream (Newpathname), charsetname)); int Len = 0;char[] Cbuf = new char[1024];//here is not equal to-1, at first I write not equal to 0 ... The result is an error while (len = Br.read (cbuf))! =-1) {bw.write (cbuf, 0, Len), Bw.flush ();//flush buffer After write, just like closing the door}//timely release of resources Br.close (); bw.c Lose ();}}

Result

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JavaSE8 basic BufferedReader char[] way Read-write implementation copy and paste TXT file