com.sun.javatest.util
Class Fifo

java.lang.Object
  com.sun.javatest.util.Fifo

public class Fifo
extends java.lang.Object

A simple variable length first-in first-out queue.

Constructor Summary

Fifo()
Create a buffer with a default initial size.

Fifo(int initialSlots)
Create a buffer with a specified initial size.

Method Summary

void	flush() Flush all entries from the buffer.
void	insert(java.lang.Object obj) Insert an entry into the buffer.
boolean	isEmpty() Check if the buffer has an entries or not.
java.lang.Object	remove() Remove an entry from the buffer if one is available.
int	size() Return the number of entries currently in the fifo.

Methods inherited from class java.lang.Object

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

Constructor Detail

Fifo

public Fifo()

Create a buffer with a default initial size.

Fifo

public Fifo(int initialSlots)

Create a buffer with a specified initial size.

Parameters:

initialSlots - The number of initial slots in the buffer; the number of slots required by the buffer will be expanded as required.

Method Detail

isEmpty

public boolean isEmpty()

Check if the buffer has an entries or not.

Returns:

true if the buffer has no entries, and false otherwise.

size

public int size()

Return the number of entries currently in the fifo.

Returns:

The number of entries currently in the fifo

insert

public void insert(java.lang.Object obj)

Insert an entry into the buffer. The buffer will be increased in size if necessary to accommodate the new entry.

Parameters:

obj - The object to be inserted. It must not be null.

remove

public java.lang.Object remove()

Remove an entry from the buffer if one is available.

Returns:

The next object in line to be removed, if one is available, or null if none are available.

flush

public void flush()

Flush all entries from the buffer.