Java in a Nutshell, 5th Edition [Electronic resources]

This class is a character output stream that uses an internal character array as the destination of characters written to it. When you create a CharArrayWriter, you may optionally specify an initial size for the character array, but you do not specify the character array itself; this array is managed internally by the CharArrayWriter and grows as necessary to accommodate all the characters written to it. The toString( ) and toCharArray( ) methods return a copy of all characters written to the stream, as a string and an array of characters, respectively. CharArrayWriter defines the standard write( ) , flush( ), and close( ) methods all Writer subclasses define. It also defines a few other useful methods. size( ) returns the number of characters that have been written to the stream. reset( ) resets the stream to its initial state, with an empty character array; this is more efficient than creating a new CharArrayWriter. Finally, writeTo( ) writes the contents of the internal character array to some other specified character stream. CharArrayWriter is the character-stream analog of ByteArrayOutputStream and is quite similar to StringWriter.

public class 
CharArrayWriter  extends Writer {
// Public Constructors
public 
CharArrayWriter ( );  
public 
CharArrayWriter (int 
initialSize );  
// Public Instance Methods
5.0   public CharArrayWriter 
append (CharSequence 
csq );  
5.0   public CharArrayWriter 
append (char 
c );  
5.0   public CharArrayWriter 
append (CharSequence 
csq , int 
start , int 
end );  
public void 
reset ( );  
public int 
size ( );  
public char[ ] 
toCharArray ( );  
public void 
writeTo (Writer 
out ) throws IOException;  
// Public Methods Overriding Writer
public void 
close ( );                                                empty
public void 
flush ( );                                                empty
public void 
write (int 
c );  
public void 
write (char[ ] 
c , int 
off , int 
len );  
public void 
write (String 
str , int 
off , int 
len );  
// Public Methods Overriding Object
public String 
toString ( );  
// Protected Instance Fields
protected char[ ] 
buf ;  
protected int 
count ;  
}