Java.io.InputStreamReader Class


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Introduction

The Java.io.InputStreamReader class is a bridge from byte streams to character streams.It reads bytes and decodes them into characters using a specified charset.

Class declaration

Following is the declaration for Java.io.InputStreamReader class:

public class InputStreamReader
   extends Reader

Field

Following are the fields for Java.io.InputStreamReader class:

  • protected Object lock -- This is the object used to synchronize operations on this stream.

Class constructors

S.N. Constructor & Description
1

InputStreamReader(InputStream in)

This creates an InputStreamReader that uses the default charset.

2

InputStreamReader(InputStream in, Charset cs)

This creates an InputStreamReader that uses the given charset.

3

InputStreamReader(InputStream in, CharsetDecoder dec)

This creates an InputStreamReader that uses the given charset decoder.

4

InputStreamReader(InputStream in, String charsetName)

This creates an InputStreamReader that uses the named charset.

Class methods

S.N. Method & Description
1

void close()

This method closes the stream and releases any system resources associated with it.

2

String getEncoding()

This method returns the name of the character encoding being used by this stream.

3

int read()

This method reads a single character.

4

int read(char[] cbuf, int offset, int length)

This method reads characters into a portion of an array.

5

boolean ready()

This method tells whether this stream is ready to be read.

Methods inherited

This class inherits methods from the following classes:

  • Java.io.Reader
  • Java.io.Object


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