- Java.io package classes
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- Java.io - FilterReader
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- Java.io - InputStream
- Java.io - InputStreamReader
- Java.io - LineNumberInputStream
- Java.io - LineNumberReader
- Java.io - ObjectInputStream
- Java.io - ObjectInputStream.GetField
- Java.io - ObjectOutputStream
- io - ObjectOutputStream.PutField
- Java.io - ObjectStreamClass
- Java.io - ObjectStreamField
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- Java.io - StringBufferInputStream
- Java.io - StringReader
- Java.io - StringWriter
- Java.io - Writer
- Java.io package extras
- Java.io - Interfaces
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- Java.io package Useful Resources
- Java.io - Discussion
Java.io.LineNumberReader Class
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
Sr.No. | 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
Sr.No. | 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