DAT
Interface QueueChar

All Known Implementing Classes:

QueueCharBlock, QueueCharLinked

public interface QueueChar

Character queue interface.

Method Summary

char	dequeue() remove the first item in the queue
void	enqueue(char a) add a new item to the queue
char	examine() examine the first item in the queue
boolean	isEmpty() test whether the queue is empty

Method Detail

isEmpty

public boolean isEmpty()

test whether the queue is empty

Returns:

true if the queue is empty, false otherwise

enqueue

public void enqueue(char a)

add a new item to the queue

Parameters:

a - the item to add

examine

public char examine()
             throws Underflow

examine the first item in the queue

Returns:

the first item

Throws:

Underflow - if the queue is empty

dequeue

public char dequeue()
             throws Underflow

remove the first item in the queue

Returns:

the first item

Throws:

Underflow - if the queue is empty