read() method reads the next byte of the data from the the input stream and returns int in the range of 0 to 255.

Which method is used to get data from input stream?

Methods of InputStream



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

How do I read a stream String?

Using the InputStreamReader class



To convert an InputStream Object int to a String using this method. Instantiate an InputStreamReader class by passing your InputStream object as parameter. Read the contents of the current stream reader to a character array using the read() method of the InputStreamReader class.

Which of these is used to read a String from the input stream read () readLine ()?

Which of these is used to read a string from the input stream? Explanation: None.

How do you read input stream lines?

Read line of chars from console with InputStream

  1. Use System.in to get the standard InputStream.
  2. Create a new BufferedReader with a new InputStreamReader with the specified InputStream.
  3. Use readLine() API method of BufferedReader to read a line of text.
  4. Close the BufferedReader, using the close() API method,


What is readLine () in Java?

The readLine() method of Console class in Java is used to read a single line of text from the console. Syntax: public String readLine() Parameters: This method does not accept any parameter. Return value: This method returns the string containing the line that is read from the console.

Which of the following methods of input stream is used to read integers?

Method Summary

Modifier and Type Method and Description
int read(byte[] b, int off, int len) Reads up to len bytes of data from the input stream into an array of bytes.
void reset() Repositions this stream to the position at the time the mark method was last called on this input stream.

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.

How do I make a stream from a string?

It’s fairly easy to convert a C# String to a Stream and vice-versa.

  1. Convert String to Stream. To convert a C# String to a MemoryStream object, use the GetBytes Encoding method to create a byte array, then pass that to the MemoryStream constructor: …
  2. Convert Stream to String. …
  3. Console Test Program.


How do you read a string from a file in Java?

The readString() method of File Class in Java is used to read contents to the specified file. Return Value: This method returns the content of the file in String format. Note: File. readString() method was introduced in Java 11 and this method is used to read a file’s content into String.

What is input stream in Java?

InputStream , represents an ordered stream of bytes. In other words, you can read data from a Java InputStream as an ordered sequence of bytes. This is useful when reading data from a file, or received over the network.

How do you create an input stream object to read a file?

Java FileInputStream constructors

  1. FileInputStream(File file) — creates a file input stream to read from a File object.
  2. FileInputStream(String name) — creates a file input stream to read from the specified file name.
  3. FileInputStream(FileDescriptor fdObj) — creates a file input read from the specified file descriptor.


What is DataInputStream class in Java?

Introduction. The Java.io.DataInputStream class lets an application read primitive Java data types from an underlying input stream in a machine-independent way.Following are the important points about DataInputStream − An application uses a data output stream to write data that can later be read by a data input stream.

Which method of Java io DataInputStream can be used to read a String from underlying stream?

Java DataInputStream class Methods

Method Description
String readUTF() It is used to read a string that has been encoded using the UTF-8 format.
void readFully(byte[] b) It is used to read bytes from the input stream and store them into the buffer array.

Which method of data input stream class read a line from the file and return it as a String?

readLine() method of DataInputStream class reads line from file & returns it as string – Core Java.

What is the use of writeUTF method?

writeUTF. Writes a string to the underlying output stream using modified UTF-8 encoding in a machine-independent manner. First, two bytes are written to the output stream as if by the writeShort method giving the number of bytes to follow.

What is DataInputStream and DataOutputStream in Java?

The DataInputStream class read primitive Java data types from an underlying input stream in a machine-independent way. While the DataOutputStream class write primitive Java data types to an output stream in a portable way.

What is readUTF and writeUTF in Java?

The readUTF() and writeUTF() methods in Java



Unicode (UTF) − Stands for Unicode Translation Format. It is developed by The Unicode Consortium. if you want to create documents that use characters from multiple character sets, you will be able to do so using the single Unicode character encodings.

What is flush method in Java?

flush() method flushes the stream. If the stream has saved any characters from the various write() methods in a buffer, write them immediately to their intended destination. Then, if that destination is another character or byte stream, flush it.

What is the use of flush () and close () methods in Java?

flush() writes the content of the buffer to the destination and makes the buffer empty for further data to store but it does not closes the stream permanently. That means you can still write some more data to the stream. But close() closes the stream permanently.

Why do we use flush method?

The flush() method



While you are trying to write data to a Stream using the BufferedWriter object, after invoking the write() method the data will be buffered initially, nothing will be printed. The flush() method is used to push the contents of the buffer to the underlying Stream.

What is stream flush?

Flushing a stream ensures that all data that has been written to that stream is output, including clearing any that may have been buffered. Some streams are buffered to aid performance, e.g. a stream writing to disk may buffer until the content reaches a block size.

What is cout << flush?

The predefined streams cout and clog are flushed when input is requested from the predefined input stream (cin). The predefined stream cerr is flushed after each output operation. An output stream that is unit-buffered is flushed after each output operation. A unit-buffered stream is a stream that has ios::unitbuf set.

What is std :: flush?

std::flush is a manipulator, i.e., a function with a specific signature. To start off simple, you can think of std::flush of having the signature. std::ostream& std::flush(std::ostream&); The reality is a bit more complex, though (if you are interested, it is explained below as well).