What is an input stream?

1.1 InputStream: InputStream is an abstract class of Byte Stream that describe stream input and it is used for reading and it could be a file, image, audio, video, webpage, etc. it doesn’t matter. Thus, InputStream read data from source one item at a time.

What is input stream class?

InputStream class is the superclass of all the io classes i.e. representing an input stream of bytes. It represents input stream of bytes. Applications that are defining subclass of InputStream must provide method, returning the next byte of input.

How is input stream defined in java?

Methods of InputStream

  1. read() – reads one byte of data from the input stream.
  2. read(byte[] array) – reads bytes from the stream and stores in the specified array.
  3. available() – returns the number of bytes available in the input stream.
  4. mark() – marks the position in the input stream up to which data has been read.

Which method is used to close the input stream?

void close()
Method Summary

Modifier and Type Method and Description
void close() Closes this input stream and releases any system resources associated with the stream.
void mark(int readlimit) Marks the current position in this input stream.
boolean markSupported() Tests if this input stream supports the mark and reset methods.

What is input stream and output stream?

In Java, streams are the sequence of data that are read from the source and written to the destination. An input stream is used to read data from the source. And, an output stream is used to write data to the destination.

What is input stream in C?

A stream is a logical entity that represents a file or device, that can accept input or output. All input and output functions in standard C, operate on data streams. Streams can be divided into text, streams and binary streams.

What is input stream C++?

In C++ input and output are performed in the form of a sequence of bytes or more commonly known as streams. Input Stream: If the direction of flow of bytes is from the device(for example, Keyboard) to the main memory then this process is called input.

How do you take an input stream?

Ways to convert an InputStream to a String:

  1. Using IOUtils.toString (Apache Utils) String result = IOUtils.toString(inputStream, StandardCharsets.UTF_8);
  2. Using CharStreams (Guava) String result = CharStreams.toString(new InputStreamReader( inputStream, Charsets.UTF_8));
  3. Using Scanner (JDK)
  4. Using Stream API (Java 8).

How do you make an input stream?


  1. Get the bytes of the String.
  2. Create a new ByteArrayInputStream using the bytes of the String.
  3. Assign the ByteArrayInputStream object to an InputStream variable.
  4. Buffer contains bytes that read from the stream.
  5. Print the InputStream.

What is an input stream in C++?

standard input stream (cin): Usually the input device in a computer is the keyboard. C++ cin statement is the instance of the class istream and is used to read input from the standard input device which is usually a keyboard. The extraction operator(>>) is used along with the object cin for reading inputs.

What are the types of input and output stream in Java?

Java IO : Input-output in Java with Examples

Stream class Description
FileInputStream This is used to reads from a file
InputStream This is an abstract class that describes stream input.
PrintStream This contains the most used print() and println() method
BufferedOutputStream This is used for Buffered Output Stream.