What is BufferedReader and BufferedWriter in Java?

What is BufferedReader in Java?

Class BufferedReader. Reads text from a character-input stream, buffering characters so as to provide for the efficient reading of characters, arrays, and lines. The buffer size may be specified, or the default size may be used.

In which format will BufferedReader and BufferedWriter process data?

Both BufferedReader and BufferedWriter in java are classified as buffered I/O streams. Buffered input streams read data from a memory area known as a buffer; the native input API is called only when the buffer is empty.

What is the difference between BufferedReader and FileReader in Java?

FileReader is used to read a file from a disk drive whereas BufferedReader is not bound to only reading files. It can be used to read data from any character stream.

What is difference between BufferedReader and InputStreamReader?

BufferedReader reads a couple of characters from the Input Stream and stores them in a buffer. InputStreamReader reads only one character from the input stream and the remaining characters still remain in the streams hence There is no buffer in this case.

Which is better scanner or BufferedReader?

BufferedReader should be used if we are working with multiple threads. BufferedReader has significantly larger buffer memory than Scanner. … BufferedReader is a bit faster as compared to scanner because scanner does parsing of input data and BufferedReader simply reads sequence of characters.

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What is the difference between BufferedReader and BufferedInputStream?

The main difference between BufferedReader and BufferedInputStream is that BufferedReader reads characters (text), whereas the BufferedInputStream reads raw bytes. The Java BufferedReader class is a subclass of the Java Reader class, so you can use a BufferedReader anywhere a Reader is required.

Why do we use InputStreamReader in Java?

The Java InputStreamReader is often used to read characters from files (or network connections) where the bytes represents text. For instance, a text file where the characters are encoded as UTF-8. You could use an InputStreamReader to wrap a FileInputStream in order to read such a file.

Why is BufferedWriter used?

Java BufferedWriter class is used to provide buffering for Writer instances. It makes the performance fast. It inherits Writer class. The buffering characters are used for providing the efficient writing of single arrays, characters, and strings.

What is the difference between FileWriter and BufferedWriter?

FileWriter writes directly into Files and should be used only when the number of writes is less. BufferedWriter: BufferedWriter is almost similar to FileWriter but it uses internal buffer to write data into File. So if the number of write operations is more, the actual IO operations are less and performance is better.

What is BufferedInputStream in Java?

Java BufferedInputStream class is used to read information from stream. It internally uses buffer mechanism to make the performance fast. … When the bytes from the stream are skipped or read, the internal buffer automatically refilled from the contained input stream, many bytes at a time.