What is the difference between DataInputStream and BufferedReader?

What is the difference between DataInputStream and BufferedReader?

DataInputStream is a part of filtered streams, while BufferedReader is not. DataInputStream consumes less amount of memory space being it is a binary stream, whereas BufferedReader consumes more memory space being it is character stream.

Why we use InputStreamReader instead of an InputStream?

Well InputStreamReader is used to directly read characters. So reading them as int and then converting to char is not really optimal. That is the main difference I believe. InputStream gives you the bytes, and the InputStreamReader gives you already chars so it reads the InputStream 8bits at a time.

What is DataInputStream in Java?

Java DataInputStream class allows an application to read primitive data from the input stream in a machine-independent way. Java application generally uses the data output stream to write data that can later be read by a data input stream.

How does DataInputStream work?

Class DataInputStream. A data input stream lets an application read primitive Java data types from an underlying input stream in a machine-independent way. An application uses a data output stream to write data that can later be read by a data input stream.

What is the purpose of DataInputStream?

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. Here is an example to demonstrate the use of DataInputStream and DataOutputStream .

What is the purpose of InputStreamReader?

An InputStreamReader is a bridge from byte streams to character streams: It reads bytes and decodes them into characters using a specified charset . The charset that it uses may be specified by name or may be given explicitly, or the platform’s default charset may be accepted.

What is readInt in Java?

The readInt() method of DataInputStream class in Java is used to read four input bytes and returns a integer value. This method reads the next four bytes from the input stream and interprets it into integer type and returns.

What’s the difference between InputStream and datainputstream in Java?

DataInputStream :A data input stream lets an application read primitive Java data types from an underlying input stream in a machine-independent way. An application uses a data output stream to write data that can later be read by a data input stream. For More use this link http://docs.oracle.com/javase/6/docs/api/java/io/DataInputStream.html

What is the difference between BufferedReader and InputStreamReader in Java?

For more on BufferedReader with simple code example, you may read Java BufferedReader Class – Decodejava.com. InputStreamReader is wrapped around an input stream(that reads in bytes) to read data in the form of characters from it, hence InputStreamReader class acts as a converter of bytes to characters.

How does InputStreamReader read and decode byte streams?

InputStreamReader converts byte streams to character streams. It reads bytes and decodes them into characters using a specified charset. The charset that it uses may be specified by name or may be given explicitly, or the platform’s default charset may be accepted. Hope it helps.

Which is better scanner or InputStreamReader for parsing?

In terms of performance, Scanner is definitely the slower one, at least from my experience. It’s made for parsing, not reading huge blocks of data. InputStreamReader, with a large enough buffer, can perform on par with BufferedReader, which I remember to be a few times faster than Scanner for reading from a dictionary list.