public class CharArrayWriter extends Writer
Note: Invoking close() on this class has no effect, and methods of this class can be called after the stream has closed without generating an IOException.
| Modifier and Type | Field and Description |
|---|---|
protected char[] |
buf
The buffer where data is stored.
|
protected int |
count
The number of chars in the buffer.
|
| Constructor and Description |
|---|
CharArrayWriter()
Creates a new CharArrayWriter.
|
CharArrayWriter(int initialSize)
Creates a new CharArrayWriter with the specified initial size.
|
| Modifier and Type | Method and Description |
|---|---|
CharArrayWriter |
append(char c)
Appends the specified character to this writer.
|
CharArrayWriter |
append(CharSequence csq)
Appends the specified character sequence to this writer.
|
CharArrayWriter |
append(CharSequence csq,
int start,
int end)
Appends a subsequence of the specified character sequence to this writer.
|
void |
close()
Close the stream.
|
void |
flush()
Flush the stream.
|
void |
reset()
Resets the buffer so that you can use it again without
throwing away the already allocated buffer.
|
int |
size()
Returns the current size of the buffer.
|
char[] |
toCharArray()
Returns a copy of the input data.
|
String |
toString()
Converts input data to a string.
|
void |
write(char[] c,
int off,
int len)
Writes characters to the buffer.
|
void |
write(int c)
Writes a character to the buffer.
|
void |
write(String str,
int off,
int len)
Write a portion of a string to the buffer.
|
void |
writeTo(Writer out)
Writes the contents of the buffer to another character stream.
|
protected char[] buf
protected int count
public CharArrayWriter()
public CharArrayWriter(int initialSize)
initialSize - an int specifying the initial buffer size.IllegalArgumentException - if initialSize is negativepublic void write(int c)
public void write(char[] c,
int off,
int len)
public void write(String str, int off, int len)
public void writeTo(Writer out) throws IOException
out - the output stream to write toIOException - If an I/O error occurs.public CharArrayWriter append(CharSequence csq)
An invocation of this method of the form out.append(csq) behaves in exactly the same way as the invocation
out.write(csq.toString())
Depending on the specification of toString for the character sequence csq, the entire sequence may not be appended. For instance, invoking the toString method of a character buffer will return a subsequence whose content depends upon the buffer's position and limit.
append in interface Appendableappend in class Writercsq - The character sequence to append. If csq is
null, then the four characters "null" are
appended to this writer.public CharArrayWriter append(CharSequence csq, int start, int end)
An invocation of this method of the form out.append(csq, start, end) when csq is not null, behaves in exactly the same way as the invocation
out.write(csq.subSequence(start, end).toString()) append in interface Appendableappend in class Writercsq - The character sequence from which a subsequence will be
appended. If csq is null, then characters
will be appended as if csq contained the four
characters "null".start - The index of the first character in the subsequenceend - The index of the character following the last character in the
subsequenceIndexOutOfBoundsException - If start or end are negative, start
is greater than end, or end is greater than
csq.length()public CharArrayWriter append(char c)
An invocation of this method of the form out.append(c) behaves in exactly the same way as the invocation
out.write(c) append in interface Appendableappend in class Writerc - The 16-bit character to appendpublic void reset()
public char[] toCharArray()
public int size()
public String toString()
public void flush()
public void close()
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