layout:post

title:"How To Read File UsingBufferReader In Java?"

title:"How To Read File UsingBufferedReader In Java?"

author:gaurav

image:assets/images/2021-01-03/read-file-using-bufferreader.png

image:assets/images/2021-01-03/read-file-using-bufferedreader.png

categories:[Java, Java File IO]

description:"In this article we will see how to read a file using the `BufferReader` class in Java."

description:"In this article we will see how to read a file using the `BufferedReader` class in Java."

In this article we will see how to read a file using the`BufferReader`class in Java.

In this article we will see how to read a file using the`BufferedReader`class in Java.

`BufferReader` class reads text from a character-input stream. Because of buffering characters it provides an efficient way to read characters, arrays, and lines.

`BufferedReader` class reads text from a character-input stream. Because of buffering characters it provides an efficient way to read characters, arrays, and lines.

`BufferReader` provides two important methods to read from the file. i.e`read()` and`readLine()`.

`BufferedReader` provides two important methods to read from the file. i.e`read()` and`readLine()`.

You can specify the bufferSize in`BufferReader`constructer. But as[motioned in the docs](https://docs.oracle.com/javase/8/docs/api/java/io/BufferedReader.html),

You can specify the bufferSize in`BufferedReader`constructer. But as[motioned in the docs](https://docs.oracle.com/javase/8/docs/api/java/io/BufferedReader.html),

`BufferReader``read()` method reads a single character. IT returns the`int` representation of the char in range of 0 to 65535 (0x00-0xffff), or -1 if the end of the stream has been reached.

`BufferedReader``read()` method reads a single character. IT returns the`int` representation of the char in range of 0 to 65535 (0x00-0xffff), or -1 if the end of the stream has been reached.

We can cast`int` value returned by`read()` method to`char` to get the character value.

I have given an example to read a file character by character using the`read()` method of the`BufferReader` class

I have given an example to read a file character by character using the`read()` method of the`BufferedReader` class

packagecom.coderolls;

importjava.io.*;

publicclassBufferReaderReadMethodExample {

publicclassBufferedReaderReadMethodExample {

publicstaticvoidmain(String[]args) {

See[this example on GitHub](https://github.com/coderolls/blogpost-coding-examples/blob/main/java-files-io/BufferReaderReadMethodExample.java).

See[this example on GitHub](https://github.com/coderolls/blogpost-coding-examples/blob/main/java-files-io/BufferedReaderReadMethodExample.java).

As specified in the name, this method reads a line of text.

A line is considered to be terminated by any one of a line feed ('\n') or a carriage return ('\r').

publicclassBufferReaderReadLineMethodExample {

publicclassBufferedReaderReadLineMethodExample {

publicstaticvoidmain(String[]args) {

Visit coderolls to read more coding tutorials!

See[this example on GitHub](https://github.com/coderolls/blogpost-coding-examples/blob/main/java-files-io/BufferReaderReadLineMethodExample.java).

See[this example on GitHub](https://github.com/coderolls/blogpost-coding-examples/blob/main/java-files-io/BufferedReaderReadLineMethodExample.java).

I have given below a combine example of the Java`BufferReader``read()` and`readLine()` method below

I have given below a combine example of the Java`BufferedReader``read()` and`readLine()` method below

packagecom.coderolls;

importjava.io.*;

publicclassBufferReaderExanple {

publicclassBufferedReaderExanple {

publicstaticvoidmain(String[]args) {

BufferedReader bufferedReader=null;

try {

bufferedReader=newBufferedReader(newFileReader("F:\\sample-text.txt"));

System.out.println("Read file using read() method:");

readFileCharacterByCharacter(bufferedReader);

bufferedReader=newBufferedReader(newFileReader("F:\\sample-text-two-lines.txt"));

System.out.println("\n\nRead file using readLine() method:");

readFileLineByLine(bufferedReader);

}catch (FileNotFoundException e) {

e.printStackTrace();

}

readFileCharacterByCharacter(bufferedReader);

readFileLineByLine(bufferedReader);

try {

bufferedReader.close();

}catch (IOException e) {

}

}

}

See[this example on GitHub](https://github.com/coderolls/blogpost-coding-examples/blob/main/java-files-io/BufferReaderExanple.java).

See[this example on GitHub](https://github.com/coderolls/blogpost-coding-examples/blob/main/java-files-io/BufferedReaderExanple.java).

In Java 1.8 and above you can get a`BufferReader` instance using the`newBufferedReader()` method of the`java.nio.file.Files` class.

In Java 1.8 and above you can get a`BufferedReader` instance using the`newBufferedReader()` method of the`java.nio.file.Files` class.

You can read file character by character using the`read()` method of the`BufferReader`Class.

You can read file character by character using the`read()` method of the`BufferedReader`Class.

`read()` method returns an integer value, you have to cast it to`char` to get character value.

Also, you can read file line by line using the`readLine()` method of the`BufferReader`Class

Also, you can read file line by line using the`readLine()` method of the`BufferedReader`Class

`readLine()` methods returns the line content as string, except the line terminating character