: Class QueueOfBytes

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Class QueueOfBytes

java.lang.Object
  |
  +--QueueOfBytes

public class QueueOfBytes
extends java.lang.Object

Class QueueOfBytes uses a LinkedList from the java.util package. It can be used to collect raw bytes in a FIFO manner. Since its size is maintained in a byte, it must never have more than 127 bytes of data. This was done so that signed data does not cause problems in RSA.

Constructor Summary
`QueueOfBytes()` Constructor

Method Summary
`byte`	`dequeue()` dequeue Precondition The queue must contain at least one data byte.
`void`	`enqueue(byte b)` enqueue
`byte[]`	`getBlockOfBytes()` getBlockOfBytes
`boolean`	`isEmpty()` isEmpty
`static void`	`main(java.lang.String[] a)` Test driver for QueueOfBytes
`byte`	`size()` size

Methods inherited from class java.lang.Object

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

Constructor Detail

QueueOfBytes

public QueueOfBytes()

Constructor

Parameters:: none -
Postcondition: An empty QueueOfBytes is created
Throws:: OutOfMemoryError - Indicates that there is insufficient memory for a new QueueOfBytes,

Method Detail

isEmpty

public boolean isEmpty()

isEmpty

Parameters:: none -
Postcondition: returns true if and only if the QueueOfBytes is empty

size

public byte size()

size

Parameters:: none -
Postcondition: returns current size (data bytes) of the QueueOfBytes

enqueue

public void enqueue(byte b)

enqueue

Parameters:: b - is raw byte of data
Precondition: The queue must contain less than 127 bytes before enqueue is called.
Postcondition: the byte is added to the rear of the QueueOfBytes

dequeue

public byte dequeue()

dequeue

Precondition

The queue must contain at least one data byte.

Postcondition

the byte has been removed from the queue

Returns:: the byte at the front of the queue

getBlockOfBytes

public byte[] getBlockOfBytes()