com.rubecula.jquantity
Class Constants

java.lang.Object
  com.rubecula.jquantity.Constants

All Implemented Interfaces:

Identifiable, LookupableFactoryInterface

public class Constants

extends java.lang.Object

implements LookupableFactoryInterface

Class to create Lookupable objects for the JQuantity framework.

Since:

V_0_5

Version:

$Revision: 1.1 $

Author:

Robin Hillyard

Field Summary

private static LookupTable

$Table This is the static final lookup table of fundamental constants defined for the JQuantity framework.

Constructor Summary

Constants()

Method Summary

Lookupable	createLookupable() Create a Lookupable which stores fundamental physical constants.
Lookupable	createLookupable(java.lang.String filename) /** Method to create a Lookupable instance which is based on a file, useful for application-specific values.
java.lang.String	getIdentifier() Method to get the specific identifier for an object.

Methods inherited from class java.lang.Object

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

Field Detail

$Table

private static final LookupTable $Table

This is the static final lookup table of fundamental constants defined for the JQuantity framework. See the static initialization and/or createLookupable() for more details.

Constructor Detail

Constants

public Constants()

Method Detail

createLookupable

public Lookupable createLookupable()

Create a Lookupable which stores fundamental physical constants.
In particular, this method returns the (static) table of constants which JQuantity builds for handling expressions.

The constants (all instances of JQuantity) defined have the following keys:

• c: velocity of light in vacuo.
• pi
• mu0: the magnetic permeability of free space.
• e: the charge of an electron.
• g: the standard acceleration due to gravity at Earth's surface.
• G: Newtons's Gravitational Constant.
• R§: The Rydberg constant.
• Alpha: The fine-structure constant.

Specified by:

createLookupable in interface LookupableFactoryInterface

Returns:

a table of key-lookupable Presentable values.

See Also:

LookupableFactoryInterface.createLookupable()

createLookupable

public Lookupable createLookupable(java.lang.String filename)
                            throws java.io.FileNotFoundException

Description copied from interface: LookupableFactoryInterface

/** Method to create a Lookupable instance which is based on a file, useful for application-specific values.

Specified by:

createLookupable in interface LookupableFactoryInterface

Parameters:

filename -

Returns:

a Lookupable object.

Throws:

java.io.FileNotFoundException - if filename cannot be found.

getIdentifier

public java.lang.String getIdentifier()

Description copied from interface: Identifiable

Method to get the specific identifier for an object.

Specified by:

getIdentifier in interface Identifiable

Returns:

the identifier.