Download - Buffered Byte & Char Stream

7/31/2019 Buffered Byte & Char Stream

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Presented by,A. Julian Sathyadason

Buffered Byte Stream&Buffered Character Stream


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BufferedInputStream class is used forbuffering the input and

it supports operation to re-read the files.

BufferedOutputStream class is used to buffer the output and

enhance the performance.

Reading/Writing using Bufferedbyte stream classes


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Methods ofBufferedInputStream


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Methods ofBufferedInputStream


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import java.io.*;

class BufferedInOutStreamDemo {

public static void main(String args[]) throwsIOException{

FileInputStream fis=new FileInputStream(args[0]);

BufferedInputStream bis=newBufferedInputStream(fis);

int n=fis.available();

bis.mark(n);

System.out.println(Marked the stream);

byte b[]=new byte[n];

byte b1[]=new byte[n];

bis.read(b);

Example


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bis.reset();

System.out.println(Reading the stream againfrom the marked point);

bis.read(b1);

System.out.println(new String(b1));

bis.close();

fis.close();

/*Line 20*/ System.out.println(Writing contents

to : +args[1]);FileOutputStream fos=new

FileOutputStream(args[1]);

BufferedOutputStream out=newBufferedOutputStream(fos);

/*Line 23*/ out.write(b);

Example (contd.)


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C:\javabook\programs\chap09>javaBufferedInOutStreamDemo sample.txt Demo.txt

Marked the stream

Contents of sample.txt: This is my sample file

Resetting the stream

Reading the stream again from the marked point

This is my sample file

Writing contents to : Demo.txt

Contents written

The Output


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BufferedReader class is used for buffering the input and

it supports operation to re-read the files

just like BufferedInputStream

BufferedWriter class is used to

buffer the output and

enhance the performance

just like BufferedOutputStreamLet us take an example to show these two classes:

Reading/Writing using Bufferedcharacter stream classes


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import java.io.*;

class BufferedReadWriteDemo {

public static void main(String args[]) throwsIOException{

int n;FileReader fr=new FileReader(args[0]);

System.out.println(File opened: +args[0]);

BufferedReader br=new BufferedReader(fr);

PrintWriter out=new PrintWriter(System.out,true);

String str;

FileWriter fw= new FileWriter(args[1]);

BufferedWriter bw=new BufferedWriter(fw);

Example


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while((str=br.readLine())!=null){

out.println(str);

bw.write(str+\n);

}

System.out.println(Contents copied to:+args[1]);

br.close();

br.close();

fr.close();

fw.close(); }}

Example (contd.)


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C:\javabook\programs\CHAP09~1>javaBufferedReadWriteDemo Sample1.txtDemo2.txt

File opened: Sample1.txt

This is my sample file

Contents copied to: Demo2.txt

The Output


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Queries


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Download - Buffered Byte & Char Stream

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