FileDocCategorySizeDatePackage
ByteBufferAsCharBufferB.javaAPI DocJava SE 5 API3745Fri Aug 26 16:49:42 BST 2005java.nio

ByteBufferAsCharBufferB

public class ByteBufferAsCharBufferB extends CharBuffer

Fields Summary
protected final ByteBuffer
bb
protected final int
offset
Constructors Summary
ByteBufferAsCharBufferB(ByteBuffer bb)

	// package-private

	super(-1, 0,
	      bb.remaining() >> 1,
	      bb.remaining() >> 1);
	this.bb = bb;
	// enforce limit == capacity
	int cap = this.capacity();
	this.limit(cap);
	int pos = this.position();
	assert (pos <= cap);
	offset = pos;
ByteBufferAsCharBufferB(ByteBuffer bb, int mark, int pos, int lim, int cap, int off)


	super(mark, pos, lim, cap);
	this.bb = bb;
	offset = off;
Methods Summary
public java.nio.CharBufferasReadOnlyBuffer()


	return new ByteBufferAsCharBufferRB(bb,
						 this.markValue(),
						 this.position(),
						 this.limit(),
						 this.capacity(),
						 offset);
public java.nio.CharBuffercompact()


	int pos = position();
	int lim = limit();
	assert (pos <= lim);
	int rem = (pos <= lim ? lim - pos : 0);

	ByteBuffer db = bb.duplicate();
 	db.limit(ix(lim));
	db.position(ix(0));
	ByteBuffer sb = db.slice();
	sb.position(pos << 1);
	sb.compact();
 	position(rem);
	limit(capacity());
	return this;
public java.nio.CharBufferduplicate()

	return new ByteBufferAsCharBufferB(bb,
						    this.markValue(),
						    this.position(),
						    this.limit(),
						    this.capacity(),
						    offset);
public charget()

	return Bits.getCharB(bb, ix(nextGetIndex()));
public charget(int i)

	return Bits.getCharB(bb, ix(checkIndex(i)));
public booleanisDirect()

	return bb.isDirect();
public booleanisReadOnly()

	return false;
protected intix(int i)

	return (i << 1) + offset;
public java.nio.ByteOrderorder()


	return ByteOrder.BIG_ENDIAN;
public java.nio.CharBufferput(int i, char x)


	Bits.putCharB(bb, ix(checkIndex(i)), x);
	return this;
public java.nio.CharBufferput(char x)


	Bits.putCharB(bb, ix(nextPutIndex()), x);
	return this;
public java.nio.CharBufferslice()

	int pos = this.position();
	int lim = this.limit();
	assert (pos <= lim);
	int rem = (pos <= lim ? lim - pos : 0);
	int off = (pos << 1) + offset;
        assert (off >= 0);
	return new ByteBufferAsCharBufferB(bb, -1, 0, rem, rem, off);
public java.lang.CharSequencesubSequence(int start, int end)

	int pos = position();
	int lim = limit();
	assert (pos <= lim);
	pos = (pos <= lim ? pos : lim);
	int len = lim - pos;

	if ((start < 0) || (end > len) || (start > end))
	    throw new IndexOutOfBoundsException();
	int sublen = end - start;
 	int off = offset + ((pos + start) << 1);
        assert (off >= 0);
	return new ByteBufferAsCharBufferB(bb, -1, 0, sublen, sublen, off);
public java.lang.StringtoString(int start, int end)

	if ((end > limit()) || (start > end))
	    throw new IndexOutOfBoundsException();
	try {
	    int len = end - start;
	    char[] ca = new char[len];
	    CharBuffer cb = CharBuffer.wrap(ca);
	    CharBuffer db = this.duplicate();
	    db.position(start);
	    db.limit(end);
	    cb.put(db);
	    return new String(ca);
	} catch (StringIndexOutOfBoundsException x) {
	    throw new IndexOutOfBoundsException();
	}