Java.io.LineNumberReader Class


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Introduction

The Java.io.LineNumberReader class is a buffered character-input stream that keeps track of line numbers.A line is considered to be terminated by any one of a line feed ('\n'), a carriage return ('\r'), or a carriage return followed immediately by a linefeed.

Class declaration

Following is the declaration for Java.io.LineNumberReader class:

public class LineNumberReader
   extends BufferedReader

Field

Following are the fields for Java.io.LineNumberReader class:

  • protected Object lock -- This is the object used to synchronize operations on this stream.

Class constructors

S.N. Constructor & Description
1

LineNumberReader(Reader in)

This creates a new line-numbering reader, using the default input-buffer size.

2

LineNumberReader(Reader in, int sz)

This creates a new line-numbering reader, reading characters into a buffer of the given size.

Class methods

S.N. Method & Description
1

int getLineNumber()

This method gets the current line number.

2

void mark(int readAheadLimit)

This method mark the present position in the stream.

3

int read()

This method read a single character.

4

int read(char[] cbuf, int off, int len)

This method read characters into a portion of an array.

5

String readLine()

This method read a line of text.

6

void reset()

This method reset the stream to the most recent mark.

7

void setLineNumber(int lineNumber)

This method set the current line number.

8

long skip(long n)

This method skip characters.

Methods inherited

This class inherits methods from the following classes:

  • Java.io.BufferedReader
  • Java.io.Reader
  • Java.io.Object


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