Java Utililty Methods CharBuffer

char[] asChars(CharBuffer buffer)
as Chars

final char[] data = new char[buffer.limit()];
System.arraycopy(buffer.array(), 0, data, 0, buffer.limit());
return data;

int capacityRemaining(CharBuffer buffer)
capacity Remaining

return buffer.limit() - buffer.position();

char[] charBufferToChars(CharBuffer buffer)
char Buffer To Chars

final char[] array = buffer.array();
final int arrayOffset = buffer.arrayOffset();
return Arrays.copyOfRange(array, arrayOffset + buffer.position(), arrayOffset + buffer.limit());

String consume(CharBuffer buf, boolean trim)
consume

buf.flip();
int offset = 0;
int end = buf.limit();
if (trim) {
 while (offset < end && buf.get(offset) == ' ')
 offset++;
 while (end > offset && buf.get(end - 1) == ' ')
 end--;
...

char[] convertCharBufferToArray(java.nio.CharBuffer buf)
convert Char Buffer To Array

if (buf.hasArray()) {
 return buf.array();
} else {
 buf.rewind();
 char[] array = new char[buf.remaining()];
 int index = 0;
 while (buf.hasRemaining()) {
 array[index++] = buf.get();
...

void eraseCharBuffer(CharBuffer buffer)
erase Char Buffer

char[] data = buffer.array();
long limit = buffer.arrayOffset() + buffer.limit();
for (int i = buffer.arrayOffset(); i < limit; i++)
 data[i] = 0xAA;
for (int i = buffer.arrayOffset(); i < limit; i++)
 data[i] = 0x55;
for (int i = buffer.arrayOffset(); i < limit; i++)
 data[i] = 0x00;
...

CharBuffer extendBuffer(CharBuffer buffer, int size)
extend Buffer

final CharBuffer localBuffer = CharBuffer.allocate(buffer.capacity() + size);
System.arraycopy(buffer.array(), 0, localBuffer.array(), 0, buffer.position());
localBuffer.position(buffer.position());
return localBuffer;

char[] getCharsFromBufferAndReset(CharBuffer buffer)
Copy the chars out of a buffer from 0 to the current position, resets the position to 0

final int len = buffer.position();
final char[] chars = new char[len];
System.arraycopy(buffer.array(), 0, chars, 0, len);
buffer.position(0);
return chars;

boolean nextEquals(final CharBuffer buffer, final char next)
next Equals

if (!buffer.hasRemaining()) {
 return false;
return buffer.get(buffer.position()) == next;

void printBuffer(CharBuffer charBuffer)
print Buffer

charBuffer.mark();
int remain = charBuffer.remaining();
char[] ch = new char[remain];
charBuffer.get(ch, 0, remain);
System.out.print(new String(ch));
charBuffer.reset();