Java.io.Reader Class

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Introduction

The Java.io.Reader class is a abstract class for reading character streams.

Class declaration

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

public class Reader
  extends Object
    implements DataOutput, DataInput, Closeable

Field

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

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

Class constructors

S.N.Constructor & Description
1protected Reader()
This creates a new character-stream reader whose critical sections will synchronize on the reader itself.
2protected Reader(Object lock)
This creates a new character-stream reader whose critical sections will synchronize on the given object.

Class methods

S.N.Method & Description
1 abstract 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)
This method reads characters into an array.
6 abstract int read(char[] cbuf, int off, int len)
This method reads characters into a portion of an array.
7 int read(CharBuffer target)
This method attempts to read characters into the specified character buffer.
8 boolean ready()
This method tells whether this stream is ready to be read.
9 void reset()
This method resets the stream.
10 long skip(long n)
This method skips characters.

Methods inherited

This class inherits methods from the following classes:

  • Java.io.Object




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