org.archive.wayback.util
Class BitArray

java.lang.Object
  org.archive.wayback.util.BitArray

public class BitArray
extends Object

Author:

brad

Constructor Summary

BitArray(byte[] array)
Construct a new BitArray using argument as initial values.

BitArray(ByteBuffer bb)
Construct a new BitArray holding at least n bits

BitArray(int n)
Construct a new BitArray holding at least n bits

Method Summary

boolean	get(int i)
ByteBuffer	getByteBuffer()
byte[]	getBytes()
void	set(int i, boolean value) set the i'th bit to 1 or 0

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BitArray

public BitArray(int n)

Construct a new BitArray holding at least n bits

Parameters:

n - number of bits to hold

BitArray

public BitArray(byte[] array)

Construct a new BitArray using argument as initial values.

Parameters:

array - byte array of initial values

BitArray

public BitArray(ByteBuffer bb)

Construct a new BitArray holding at least n bits

Parameters:

bb - number of bits to hold

Method Detail

getBytes

public byte[] getBytes()

Returns:

the byte array backing the ByteBuffer backing this bit array.

getByteBuffer

public ByteBuffer getByteBuffer()

Returns:

the ByteBuffer backing this bit array.

get

public boolean get(int i)

Parameters:

i - index of bit to test

Returns:

true if the i'th bit is set, false otherwise

set

public void set(int i,
                boolean value)

set the i'th bit to 1 or 0

Parameters:

i - bit number to set

value - if true, the bit is set to 1, otherwise it is set to 0