Download Java.io.LineNumberInputStream.read(byte[] b, int off, int len) Method

JAVA.IO.LINENUMBERINPUTSTREAM.READ METHOD
http://www.tutorialspoint.com/java/io/linenumberinputstream_read_byte_len.htm
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Description
The java.io.LineNumberInputStream.readbyte[]b, intoff, intlen reads up to len bytes from this
input stream into an array of bytes. This method blocks until input is available.
Declaration
Following is the declaration for java.io.LineNumberInputStream.readbyte[]b, intoff, intlen method:
public int read(byte[] b, int off, int len)
Parameters
b -- the buffer into which the data is read.
off -- the start offset of the data.
len -- the maximum number of bytes read.
Return Value
The method returns the total number of bytes read into the buffer, else -1 if there is no more data.
Exception
IOException -- if an I/O error occurs
Example
The following example shows the usage of java.io.LineNumberInputStream.readbyte[]b, intoff, intlen
method.
package com.tutorialspoint;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.LineNumberInputStream;
public class LineNumberInputStreamDemo {
public static void main(String[] args) throws IOException {
LineNumberInputStream lnis = null;
FileInputStream fis =null;
byte[] buf = new byte[5];
int i;
char c;
try{
// create new input stream
fis = new FileInputStream("C:/test.txt");
lnis = new LineNumberInputStream(fis);
// read bytes to the buffer
i=lnis.read(buf, 2, 3);
System.out.println("The number of char read: "+i);
// for each byte in buffer
for(byte b:buf)
{
// if byte is zero
if(b==0)
c='-';
else
c=(char)b;
// print char
System.out.print(c);
}
}catch(Exception e){
// if any error occurs
e.printStackTrace();
}finally{
// closes the stream and releases any system resources
if(fis!=null)
fis.close();
if(lnis!=null)
lnis.close();
}
}
}
Assuming we have a text file c:/test.txt, which has the following content. This file will be used as
an input for our example program:
ABCDE
Let us compile and run the above program, this will produce the following result:
The number of char read: 3
--ABC
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