Package org.apache.commons.io.input

Class CharSequenceReader

java.lang.Object

java.io.Reader

org.apache.commons.io.input.CharSequenceReader

All Implemented Interfaces:

java.io.Serializable

public class CharSequenceReader
extends java.io.Reader
implements java.io.Serializable

Reader implementation that can read from String, StringBuffer, StringBuilder or CharBuffer.

Note: Supports mark(int) and reset().

Since:

1.4

See Also:

Serialized Form

Field Summary

Fields inherited from class java.io.Reader

lock

Constructor Summary

Constructors

Constructor	Description
CharSequenceReader(java.lang.CharSequence charSequence)	Construct a new instance with the specified character sequence.

Method Summary

Modifier and Type	Method	Description
void	close()	Close resets the file back to the start and removes any marked position.
void	mark(int readAheadLimit)	Mark the current position.
boolean	markSupported()	Mark is supported (returns true).
int	read()	Read a single character.
int	read(char[] array, int offset, int length)	Read the specified number of characters into the array.
void	reset()	Reset the reader to the last marked position (or the beginning if mark has not been called).
long	skip(long n)	Skip the specified number of characters.
java.lang.String	toString()	Return a String representation of the underlying character sequence.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from class java.io.Reader

read, read, ready

Constructor Detail

CharSequenceReader

public CharSequenceReader(java.lang.CharSequence charSequence)

Construct a new instance with the specified character sequence.

Parameters:

charSequence - The character sequence, may be null

Method Detail

close

public void close()

Close resets the file back to the start and removes any marked position.

Specified by:

close in class java.io.Reader

mark

public void mark(int readAheadLimit)

Mark the current position.

Overrides:

mark in class java.io.Reader

Parameters:

readAheadLimit - ignored

markSupported

public boolean markSupported()

Mark is supported (returns true).

Overrides:

markSupported in class java.io.Reader

Returns:

true

read

public int read()

Read a single character.

Overrides:

read in class java.io.Reader

Returns:

the next character from the character sequence or -1 if the end has been reached.

read

public int read(char[] array,
                int offset,
                int length)

Read the specified number of characters into the array.

Specified by:

read in class java.io.Reader

Parameters:

array - The array to store the characters in

offset - The starting position in the array to store

length - The maximum number of characters to read

Returns:

The number of characters read or -1 if there are no more

reset

public void reset()

Reset the reader to the last marked position (or the beginning if mark has not been called).

Overrides:

reset in class java.io.Reader

skip

public long skip(long n)

Skip the specified number of characters.

Overrides:

skip in class java.io.Reader

Parameters:

n - The number of characters to skip

Returns:

The actual number of characters skipped

toString

public java.lang.String toString()

Return a String representation of the underlying character sequence.

Overrides:

toString in class java.lang.Object

Returns:

The contents of the character sequence