Java.io.FilterReader Class


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Introduction

The Java.io.FilterReader class is for reading filtered character streams. Following are the important points about FilterReader:

  • The class itself provides default methods that pass all requests to the contained stream.

  • The Subclasses of FilterReader should override some of these methods and may also provide additional methods and fields.

Class declaration

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

public abstract class FilterReader
  extends Reader

Field

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

  • protected Reader in -- This is the character-input stream.

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

Class constructors

S.N. Constructor & Description
1

protected FilterReader(Reader in)

This creates a new filtered reader.

Class methods

S.N. Method & Description
1

void close()

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

2

void mark(int readAheadLimit)

This method marks the present position in the stream.

3

boolean markSupported()

This method tells whether this stream supports the mark() operation.

4

int read()

This method reads a single character.

5

int read(char[] cbuf, int off, int len)

This method reads characters into a portion of an array.

6

boolean ready()

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

7

void reset()

This method resets the stream.

8

long skip(long n)

This method skips characters.

Methods inherited

This class inherits methods from the following classes:

  • Java.io.Reader
  • Java.io.Object


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