java bufferedreader

The Readline method is a very common method in bufferedreader. With this function, we can read data from a row in an input stream. To distinguish rows, use "\ r", "\ n", or "\ r \ n". below is the source code of Readline in bufferedreader. Detailed analysis is written in comments. String Readline (Boolean ignorelf) throws ioexception {stringbuffer S = NULL; int startchar; synchronized (LOCK) {// ensure

The project uses Android and C + + communication, choose the way to send characters with the socket, the first use of the code is:Socket=new Socket (); Inetsocketaddress isa = new Inetsocketaddress (ip_str, port); Socket.connect (ISA, 100); PrintWriter out=new PrintWriter (Socket.getoutputstream (), true); BufferedReader recvbuf=new BufferedReader (New InputStreamReader (Socket.getinputstream ()));In th

Resolve BufferedReader Read UTF-8 file Chinese garbledFile rst01 = new file (Context.getrealpath ("/") + "zljb0.html");File rst02 = new file (Context.getrealpath ("/") + "zljb.html"); InputStreamReader ISR = new InputStreamReader (New FileInputStream (rst01), "UTF-8"); bufferedreader reader = new BufferedReader (ISR); outputstreamwriter writerstream = new Outpu

Os:windows7 x64 Jdk:jdk-8u131-windows-x64 Ide:eclipse Oxygen Release (4.7.0) Information:The contents of the copied text file　　CodePackage 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 p

Today, when using BufferedReader, there was a strange problem.Sometimes the line will be less than one character at the beginning of a newline.The starting code is written like this. while (Br.read ()!=-1 ) { = br.readline (); System.out.println (str); }Problem point:Finding the data found that the original is in the while loop, the written judgment statement Br.read ()!=-1 There is a problem.When the program reads, it reads a br.read () Word

(); } } Catch(IOException e) {} }}}BufferwriterdemoBufferedreaderdemo (read character stream buffer demo):/*character Read Stream buffer: This buffer provides a way to read one line at a time readLine, which facilitates the acquisition of text data. When NULL is returned, the expression reads to the end of the file. When the ReadLine method returns, only the data content before the carriage return is returned. Does not return carriage returns. */ImportJava.io.*;classBuffer

FileReaderThe file character input stream, which is used to read the contents of the file as a character, is typically used to read the file contents as a character, or to read a byte form.However, the internal filereader is constructed by the parameters passed in InputStreamReader, and can only use the default encoding, so we can not control the coding problem, so it is easy to cause garbled.So it's good to read a file in bytes or use a byte stream to manipulate it.Also use this flow when using

bufferedreaderpublic static void main (string[] args) throws IOException {FileReader fr = new FileReader ("Src/temp. TXT ")//Create input stream//LineNumberReader LNR = new LineNumberReader (FR);//Create LNR object//String line = null;//lnr.setlinenumber (100) ;//through Setlinenumvber () set the line number to display//while ((line = Lnr.readline ()) = null) {//to read the contents of the loop output//SYSTEM.OUT.PRINTLN ( Lnr.getlinenumber () + ":" + line);//}//lnr.close (); Mylinenumberreader

Recently, when the classmate did the experiment, when the server side returned, using the BufferedReader class of ReadLine, he wrote, while (Reader.ready ()) {//Perform a read operation, that is ReadLineThis method is often used, but the return is empty, what is the reason for this, look at the Help document, and check the Internet, summarized as follows:Ready is to see if the stream is prepared to be read, is a non-blocking method, so it returns imme

Packageh15;ImportJava.io.*; Public classBufferedreaderdemo {/** * @paramargs*/ Public Static voidMain (string[] args) {//TODO auto-generated Method StubBufferedReader br =NULL; BufferedWriter BW=NULL; FileReader fr; FileWriter FW; Try{FR=NewFileReader ("E:/a.txt"); FW=NewFileWriter ("E:/c.txt"); BR=NewBufferedReader (FR); Bw=NewBufferedWriter (FW); String s=""; while((S=br.readline ())! =NULL) {bw.write (s); } } Catch(Exception e) {//TODO auto-generated Catch blockE