Class WaitingLine

java.lang.Object
  WaitingLine

public class WaitingLine
extends java.lang.Object

Class for simulation FIFO waiting line (queue). A waiting line has two associated statistics, a WeightedStatistic for line length, and a Statistic for waiting time.
COMP 2100
Project 3
October 2014

Constructor Summary

WaitingLine(java.lang.String name)
Creates new WaitingLine that is empty.

Method Summary

void	enter(Customer c) Place customer into the line.
Statistic	getLineLengthStat() Retrieve WeightedStatistic for line length
java.lang.String	getName() Retrieve name given to this waiting line
Statistic	getWaitTimeStat() Retrieve Statistic for waiting time
boolean	isEmpty() Reports whether any customers are waiting in line
Customer	leave() Removes a customer from the front of the line
int	length() Determine how many customers are waiting in line

Methods inherited from class java.lang.Object

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

Constructor Detail

WaitingLine

public WaitingLine(java.lang.String name)

Creates new WaitingLine that is empty.

Parameters:

name - Descriptive name for this line

Method Detail

isEmpty

public boolean isEmpty()

Reports whether any customers are waiting in line

Returns:

true if line is empty and false otherwise

length

public int length()

Determine how many customers are waiting in line

Returns:

Number of customers waiting in line.

getName

public java.lang.String getName()

Retrieve name given to this waiting line

Returns:

String containing waiting line's name

getWaitTimeStat

public Statistic getWaitTimeStat()

Retrieve Statistic for waiting time

Returns:

Statistic object for waiting time

getLineLengthStat

public Statistic getLineLengthStat()

Retrieve WeightedStatistic for line length

Returns:

WeightedStatistic object for line length

enter

public void enter(Customer c)

Place customer into the line.

Parameters:

c - the customer

leave

public Customer leave()

Removes a customer from the front of the line

Returns:

the customer, or null if line is empty