org.apache.commons.csv
Class CharBuffer
java.lang.Object
org.apache.commons.csv.CharBuffer
public class CharBuffer
extends java.lang.Object
A simple StringBuffer replacement that aims to
reduce copying as much as possible. The buffer
grows as necessary.
This class is not thread safe.
private char[] | c
|
private int | length - Actually used number of characters in the array.
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CharBuffer() - Creates a new CharBuffer with an initial capacity of 32 characters.
|
CharBuffer(int length) - Creates a new CharBuffer with an initial capacity
of
length characters.
|
void | append(String s) - Appends
s to the end of this CharBuffer.
|
void | append(StringBuffer sb) - Appends
sb to the end of this CharBuffer.
|
void | append(char data) - Appends a single character to the end of this CharBuffer.
|
void | append(char[] data) - Appends
data to the end of this CharBuffer.
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void | append(CharBuffer cb) - Appends the contents of
cb to the end of this CharBuffer.
|
int | capacity() - Returns the current capacity of the buffer.
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void | clear() - Empties the buffer.
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char[] | getCharacters() - Returns the contents of the buffer as a char[].
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int | length() - Returns the number of characters in the buffer.
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void | provideCapacity(int capacity) - Copies the data into a new array of at least
capacity size.
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void | shrink() - Shrinks the capacity of the buffer to the current length if necessary.
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String | toString() - Converts the contents of the buffer into a StringBuffer.
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StringBuffer | toStringBuffer() - Converts the contents of the buffer into a StringBuffer.
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length
private int length
Actually used number of characters in the array.
It is also the index at which
a new character will be inserted into c
.
CharBuffer
public CharBuffer()
Creates a new CharBuffer with an initial capacity of 32 characters.
CharBuffer
public CharBuffer(int length)
Creates a new CharBuffer with an initial capacity
of length
characters.
append
public void append(String s)
Appends s
to the end of this CharBuffer.
This method involves copying the new data once!
s
- the String to append or null
append
public void append(StringBuffer sb)
Appends sb
to the end of this CharBuffer.
This method involves copying the new data once!
sb
- the StringBuffer to append or null
append
public void append(char data)
Appends a single character to the end of this CharBuffer.
This method involves copying the new data once!
data
- the char to append
append
public void append(char[] data)
Appends data
to the end of this CharBuffer.
This method involves copying the new data once!
data
- the char[] to append or null
append
public void append(CharBuffer cb)
Appends the contents of cb
to the end of this CharBuffer.
cb
- the CharBuffer to append or null
capacity
public int capacity()
Returns the current capacity of the buffer.
- the maximum number of characters that can be stored in this buffer without
resizing it.
clear
public void clear()
Empties the buffer. The capacity still remains the same, so no memory is freed.
getCharacters
public char[] getCharacters()
Returns the contents of the buffer as a char[]. The returned array may
be the internal array of the buffer, so the caller must take care when
modifying it.
This method allows to avoid copying if the caller knows the exact capacity
before.
length
public int length()
Returns the number of characters in the buffer.
provideCapacity
public void provideCapacity(int capacity)
Copies the data into a new array of at least capacity
size.
shrink
public void shrink()
Shrinks the capacity of the buffer to the current length if necessary.
This method involves copying the data once!
toString
public String toString()
Converts the contents of the buffer into a StringBuffer.
This method involves copying the new data once!
toStringBuffer
public StringBuffer toStringBuffer()
Converts the contents of the buffer into a StringBuffer.
This method involves copying the new data once!