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The BufferedReader and BufferedWriter classes in Java are essential for efficient input and output operations.

BufferedReader is a wrapper for other Reader classes, providing buffering to read characters efficiently. It allows reading characters one at a time or line by line, which reduces I/O overhead. The typical usage pattern involves creating a BufferedReader instance that wraps another Reader, reading data, and then closing the BufferedReader, which also closes the wrapped Reader. For example, you can use BufferedReader.readLine() to read a line of text from a file ²³.

On the other hand, BufferedWriter is used for writing characters to a text output stream. It buffers the output to improve performance, allowing you to write single characters or strings. The BufferedWriter class provides methods like write(int c) for writing a single character and write(String str) for writing a string. It is important to close the BufferedWriter after use to release system resources ¹.

Both classes are part of the Java I/O package and are widely used for file handling.

BufferedWriter

Essential Java

Versions [{“Name”:“Java SE 1.1”,“GroupName”:null},{“Name”:“Java SE 1.2”,“GroupName”:null},{“Name”:“Java SE 1.3”,“GroupName”:null},{“Name”:“Java SE 1.4”,“GroupName”:null},{“Name”:“Java SE 5”,“GroupName...

BufferedReader

Essential Java

Introduction The BufferedReader class is a wrapper for other Reader classes that serves two main purposes: A BufferedReader provides buffering for the wrapped Reader . This allows an application to re...

How To Read Text File With BufferedReader In Java

Javarevisited

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Understanding BufferedInputStream and BufferedOutputStream in Java

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StringWriter Example

Essential Java

Java StringWriter class is a character stream that collects output from string buffer, which can be used to construct a string. The StringWriter class extends the Writer class. In StringWriter class, ...

File ReadWrite Using FileInputStreamFileOutputStream

Essential Java

Write to a file test.txt: String filepath ="C:\\test.txt"; FileOutputStream fos = null; try { fos = new FileOutputStream(filepath); byte[] buffer = "This will be written in test.txt".getBytes(); fos.w...

FileReader and FileWriter in Java: Simplified File Handling

Javarevisited

Photo by Drew Coffman on Unsplash In Java, file handling is a fundamental aspect of many applications, especially when dealing with text-based data. In our previous article, we explored FileInputStrea...

Pitfall - Small reads writes on unbuffered streams are inefficient

Essential Java

Consider the following code to copy one file to another: import java.io.*; public class FileCopy { public static void main(String[] args) throws Exception { try (InputStream is = new FileInputStream(a...

StringBuffer

Essential Java

Introduction Introduction to Java StringBuffer class.

Reading a file using BufferedInputStream

Essential Java

Reading file using a BufferedInputStream generally faster than FileInputStream because it maintains an internal buffer to store bytes read from the underlying input stream. import java.io.BufferedInpu...

String Buffer class

Essential Java

Key Points :- used to created mutable (modifiable) string. Mutable :- Which can be changed. is thread-safe i.e. multiple threads cannot access it simultaneously. Methods :- public synchronized StringB...

I/O Streams, Readers, and Writers

Introduction to Programming Using Java

Section 11.1 I/O Streams, Readers, and Writers W ithout the ability to interact with the rest of the world, a program would be useless. The interaction of a program with the rest of the world is refer...