Jan 3, 2021 · Jan 3, 2021 · Jan 3, 2021 · Jan 3, 2021
diff --git a/_posts/java-files-io/2021-01-03-read-file-using-bufferreader.md b/_posts/java-files-io/2021-01-03-read-file-using-bufferreader.md
 ---
 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),
 >The default is large enough for most purposes.

 ##BufferReader `read()` method
 ##BufferedReader `read()` method

 `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
 ```java
 package com.coderolls;

 import java.io.*;

 /**
 * A java program to read file character by character using the
 * read() method of theBufferReader Class.
 * read() method of theBufferedReader Class.
 *
 * @author Gaurav Kukade at coderolls.com
 */
 public classBufferReaderReadMethodExample {
 public classBufferedReaderReadMethodExample {

 public static void main(String[] args) {

 ```
 Welcome to coderolls.com!
 ```
 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).

 ##BufferReader `readLine()` method
 ##BufferedReader `readLine()` method
 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').

 /**
 * A java program to read file line by line using the
 * readLine() method of theBufferReader Class.
 * readLine() method of theBufferedReader Class.
 *
 * @author Gaurav Kukade at coderolls.com
 *
 */
 public classBufferReaderReadLineMethodExample {
 public classBufferedReaderReadLineMethodExample {

 public static void main(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

 ```java
 package com.coderolls;

 import java.io.*;

 public classBufferReaderExanple {
 public classBufferedReaderExanple {

 public static void main(String[] args) {
 BufferedReader bufferedReader = null;
 try {
 bufferedReader = new BufferedReader(new FileReader("F:\\sample-text.txt"));
 System.out.println("Read file using read() method: ");
 readFileCharacterByCharacter(bufferedReader);

 bufferedReader = new BufferedReader(new FileReader("F:\\sample-text-two-lines.txt"));
 System.out.println("\n\nRead file using readLine() method: ");
 readFileLineByLine(bufferedReader);

 } catch (FileNotFoundException e) {
 // TODO Auto-generated catch block
 e.printStackTrace();
 }

 readFileCharacterByCharacter(bufferedReader);

 readFileLineByLine(bufferedReader);


 try {
 bufferedReader.close();
 } catch (IOException e) {
 }

 /**
 * A method to read file content character by character using theBufferReader
 * A method to read file content character by character using theBufferedReader
 * read() method
 *
 * @param bufferedReader
 }

 /**
 * A method to read file content line by line using theBufferReader
 * A method to read file content line by line using theBufferedReader
 * readLine() method
 *
 * @param bufferedReader
 }
 ```

 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).

 ## `newBufferedReader()` method in Java 8

 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.

 ## Conclusion

 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

diff --git a/assets/images/2021-01-03/read-file-using-bufferreader.png b/assets/images/2021-01-03/read-file-using-bufferreader.png
Original file line number	Diff line number	Diff line change
		@@ -1,40 +1,40 @@
		---
		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),
		>The default is large enough for most purposes.

		##BufferReader `read()` method
		##BufferedReader `read()` method

		`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
		```java
		package com.coderolls;

		import java.io.*;

		/**
		* A java program to read file character by character using the
		* read() method of theBufferReader Class.
		* read() method of theBufferedReader Class.
		*
		* @author Gaurav Kukade at coderolls.com
		*/
		public classBufferReaderReadMethodExample {
		public classBufferedReaderReadMethodExample {

		public static void main(String[] args) {

Expand DownExpand Up		@@ -64,9 +64,9 @@ Output
		```
		Welcome to coderolls.com!
		```
		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).

		##BufferReader `readLine()` method
		##BufferedReader `readLine()` method
		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').
Expand All		@@ -82,12 +82,12 @@ import java.io.*;

		/**
		* A java program to read file line by line using the
		* readLine() method of theBufferReader Class.
		* readLine() method of theBufferedReader Class.
		*
		* @author Gaurav Kukade at coderolls.com
		*
		*/
		public classBufferReaderReadLineMethodExample {
		public classBufferedReaderReadLineMethodExample {

		public static void main(String[] args) {

Expand DownExpand Up		@@ -119,31 +119,33 @@ Welcome to coderolls.com!

		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

		```java
		package com.coderolls;

		import java.io.*;

		public classBufferReaderExanple {
		public classBufferedReaderExanple {

		public static void main(String[] args) {
		BufferedReader bufferedReader = null;
		try {
		bufferedReader = new BufferedReader(new FileReader("F:\\sample-text.txt"));
		System.out.println("Read file using read() method: ");
		readFileCharacterByCharacter(bufferedReader);

		bufferedReader = new BufferedReader(new FileReader("F:\\sample-text-two-lines.txt"));
		System.out.println("\n\nRead file using readLine() method: ");
		readFileLineByLine(bufferedReader);

		} catch (FileNotFoundException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
		}

		readFileCharacterByCharacter(bufferedReader);

		readFileLineByLine(bufferedReader);


		try {
		bufferedReader.close();
		} catch (IOException e) {
Expand All		@@ -152,7 +154,7 @@ public class BufferReaderExanple {
		}

		/**
		* A method to read file content character by character using theBufferReader
		* A method to read file content character by character using theBufferedReader
		* read() method
		*
		* @param bufferedReader
Expand All		@@ -170,7 +172,7 @@ public class BufferReaderExanple {
		}

		/**
		* A method to read file content line by line using theBufferReader
		* A method to read file content line by line using theBufferedReader
		* readLine() method
		*
		* @param bufferedReader
Expand All		@@ -190,19 +192,19 @@ public class BufferReaderExanple {
		}
		```

		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).

		## `newBufferedReader()` method in Java 8

		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.

		## Conclusion

		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

Expand Down