What is InputStreamReader class in Java?

What is InputStreamReader class in Java?

InputStreamReader class in Java. 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.

How do I read a FileInputStream in Java?

You could use an InputStreamReader to wrap a FileInputStream in order to read such a file. Here is a Java InputStreamReader example: This example first creates a FileInputStream and then wraps it in an InputStreamReader . Second, the example reads all characters from the file via the InputStreamReader

Why does InputStreamReader read 2 bytes at a time?

This is because the InputStreamReader reads bytes from the input stream as characters. For example, some characters required 2 bytes to be stored in the storage. To read such data we can use the input stream reader that reads the 2 bytes together and converts into the corresponding character.

How to get the encoding of an input stream in Java?

The getEncoding () method can be used to get the type of encoding that is used to store data in the input stream. For example, In the above example, we have created 2 input stream reader named input1 and input2. input1 does not specify the character encoding.

How do you know if an InputStreamReader is ready?

An InputStreamReader is ready if its input buffer is not empty, or if bytes are available to be read from the underlying byte stream. close () : java.io.InputStreamReader.close () closes InputStreamReader and releases all the Streams associated with it.

What is outputoutputstreamwriter in C++?

OutputStreamWriter behaves as a bridge to transfer data from character stream to byte stream. It uses default charset or we can specify charset for change in character stream to byte stream.