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guide to bufferedreader in java (based on baeldung)

this tutorial provides a comprehensive guide to the `bufferedreader` class in java, drawing inspiration from baeldung's excellent resources while offering enhanced explanations, expanded examples, and practical tips.

*1. introduction: what is bufferedreader?*

`bufferedreader` is a class in java that provides efficient reading of text from character input streams. it works by buffering the input from the underlying stream, which reduces the number of direct read operations and significantly improves performance, especially when reading character data frequently (like line by line or character by character) from sources such as files, network connections, or console input.

essentially, instead of fetching each character or line individually from the source, `bufferedreader` reads a large chunk of data into its internal buffer. subsequent read operations then retrieve data from this buffer until it's empty. only then will `bufferedreader` fetch another chunk from the source.

*why use bufferedreader?*

*performance:* buffering reduces the overhead of disk i/o or network latency. directly reading from a file for each character would be extremely slow.
*convenience:* `bufferedreader` provides methods like `readline()` that are designed for common text-processing tasks.
*simplicity:* it simplifies code that reads text by abstracting away the details of buffering.

*2. the bufferedreader class: overview and constructors*

the `bufferedreader` class is part of the `java.io` package. it's an abstract class, but you usually use its concrete implementation. the class header is:



key features to note:

it extends `reader`, making it part of the character stream hierarchy.
it is *not* thread-safe by default. if multiple threads access a `bufferedreader` instance concurrently, you'll need to synchronize access externally.

*constructors:*

`bufferedreader` has two primary const ...

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BufferedReader
Java I/O
file reading
character streams
performance optimization
input handling
exception management
line reading
text file processing
BufferedReader methods
efficiency
Java programming
stream operations
resource management
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