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

Sr.No. Constructor & Description
1

protected FilterReader(Reader in)

This creates a new filtered reader.

Class methods

Sr.No. 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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