Java.io.CharArrayWriter Class

Introduction

The Java.io.CharArrayWriter class implements a character buffer that can be used as an Writer. The buffer automatically grows when data is written to the stream.

Class declaration

Following is the declaration for Java.io.CharArrayWriter class −

pubpc class CharArrayWriter
   extends Writer

Field

Following are the fields for Java.io.CharArrayWriter class −

protected char[] buf − This is the buffer where data is stored.

protected int count − This is the number of chars in the buffer.

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

Class constructors

Sr.No.	Constructor & Description
1	CharArrayWriter() This creates a CharArrayReader from the specified array of chars.
2	CharArrayWriter(int initialSize) This creates a new CharArrayWriter with the specified initial size.

Sr.No.

Constructor & Description

CharArrayWriter()

This creates a CharArrayReader from the specified array of chars.

CharArrayWriter(int initialSize)

This creates a new CharArrayWriter with the specified initial size.

Class methods

Sr.No.	Method & Description
1	CharArrayWriter append(char c) This method appends the specified character to this writer.
2	This method appends the specified character sequence to this writer.
3	This method appends a subsequence of the specified character sequence to this writer.
4	void close() This method close the stream.
5	void flush() This method flush the stream.
6	void reset() This method resets the buffer so that you can use it again without throwing away the already allocated buffer.
7	int size() This method returns the current size of the buffer.
8	char[] toCharArray() This method returns a copy of the input data.
9	String toString() This method converts input data to a string.
10	void write(char[] c, int off, int len) This method writes characters to the buffer.
11	void write(int c) This method writes a character to the buffer.
12	This method write a portion of a string to the buffer.
13	void writeTo(Writer out) This method writes the contents of the buffer to another character stream.

Methods inherited

This class inherits methods from the following classes −

Java.io.Writer

Java.io.Object