Class Order

Object
  Order

public class Order
extends Object

An order.
CS 537, Spring 2007, Project 3.
A mapping from Grain types to integers (number of bushels).

Field Summary

private Map<Grain,Integer>	amt The actual mapping.
private static int	VERSION Source version number.

Constructor Summary

Order()
Creates a new Order with all amounts zero.

Method Summary

void	change(Grain g, int diff) Changes the mount of "g" by "diff".
void	change(Order incr) Changes the amount of each grain g by incr.get(g).
Order	copy() Returns a copy of this Order.
int	get(Grain g) Gets the amount of "g" in this order.
void	set(Grain g, int n) Sets the amount of "g" to "n".
void	set(int n) Sets the amounts of all grains to "n".
String	toString() Returns a readable version of this order.
int	total() Returns the total amount of grain in this order.

Methods inherited from class Object

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

Field Detail

VERSION

private static final int VERSION

Source version number.

See Also:

Constant Field Values

amt

private Map<Grain,Integer> amt

The actual mapping.

Constructor Detail

Order

public Order()

Creates a new Order with all amounts zero.

Method Detail

toString

public String toString()

Returns a readable version of this order.

Overrides:

toString in class Object

Returns:

a readable version of this order.

get

public int get(Grain g)

Gets the amount of "g" in this order.

Parameters:

g - the grain

Returns:

the amount of grain g

set

public void set(Grain g,
                int n)

Sets the amount of "g" to "n".

Parameters:

g - a grain

n - the amount of grain g

set

public void set(int n)

Sets the amounts of all grains to "n".

Parameters:

n - the amount to set.

total

public int total()

Returns the total amount of grain in this order.

Returns:

the total.

change

public void change(Grain g,
                   int diff)

Changes the mount of "g" by "diff".

Parameters:

g - a grain

diff - the change in the amount of grain g

change

public void change(Order incr)

Changes the amount of each grain g by incr.get(g).

Parameters:

incr - the amount to increment by.

copy

public Order copy()

Returns a copy of this Order.

Returns:

a copy of this Order.