java.io
Class CharArrayReader

java.lang.Object
  java.io.Reader
      java.io.CharArrayReader

All Implemented Interfaces:

Closeable, Readable

public class CharArrayReader
extends Reader

This class implements a character buffer that can be used as a character-input stream.

Since:

JDK1.1

Field Summary
protected  char[]	buf           The character buffer.
protected  int	count           The index of the end of this buffer.
protected  int	markedPos           The position of mark in buffer.
protected  int	pos           The current buffer position.

 

Fields inherited from class java.io.Reader
lock

 

Constructor Summary
CharArrayReader(char[] buf)           Create an CharArrayReader from the specified array of chars.
CharArrayReader(char[] buf, int offset, int length)           Create an CharArrayReader from the specified array of chars.

 

Method Summary
void	close()           Close the stream.
void	mark(int readAheadLimit)           Mark the present position in the stream.
boolean	markSupported()           Tell whether this stream supports the mark() operation, which it does.
int	read()           Read a single character.
int	read(char[] b, int off, int len)           Read characters into a portion of an array.
boolean	ready()           Tell whether this stream is ready to be read.
void	reset()           Reset the stream to the most recent mark, or to the beginning if it has never been marked.
long	skip(long n)           Skip characters.

 

Methods inherited from class java.io.Reader
read, read

 

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Field Detail

buf

protected char[] buf

The character buffer.

pos

protected int pos

The current buffer position.

markedPos

protected int markedPos

The position of mark in buffer.

count

protected int count

The index of the end of this buffer. There is not valid data at or beyond this index.

CharArrayReader

public CharArrayReader(char[] buf)

Create an CharArrayReader from the specified array of chars.

Parameters:

buf - Input buffer (not copied)

CharArrayReader

public CharArrayReader(char[] buf,
                       int offset,
                       int length)

Create an CharArrayReader from the specified array of chars.

The resulting reader will start reading at the given offset. The total number of char values that can be read from this reader will be either length or buf.length-offset, whichever is smaller.

Parameters:

buf - Input buffer (not copied)

offset - Offset of the first char to read

length - Number of chars to read

Throws:

IllegalArgumentException - If offset is negative or greater than buf.length, or if length is negative, or if the sum of these two values is negative.

public int read()
         throws IOException

public int read(char[] b,
                int off,
                int len)
         throws IOException

public long skip(long n)
          throws IOException

public boolean ready()
              throws IOException

public boolean markSupported()

public void mark(int readAheadLimit)
          throws IOException

public void reset()
           throws IOException

public void close()