Package ucar.visad

Class Constants

java.lang.Object

ucar.visad.Constants

public class Constants
extends Object

Provides support for scientific constants.

Version:

$Revision: 1.8 $ $Date: 2005/05/13 18:34:02 $

Author:

Steven R. Emmerson

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	Constants(Constants parent)	Constructs from a parent constant table or null.

Method Summary

Modifier and Type	Method	Description
Real	get(String name)	Returns the constant with a given name.
static Constants	instance()	Returns an instance of this class.
Real	put(String name, Real value)	Stores a constant into the table.

Methods inherited from class java.lang.Object

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

Constructor Details

Constants

protected Constants(Constants parent)
             throws VisADException

Constructs from a parent constant table or null. Protected to prevent use. The parent table will be searched if the constant is not found in this instances's table.

Parameters:

parent - The parent constant table or null.

Throws:

VisADException - if a core VisAD failure occurs.

Method Details

instance

public static Constants instance()

Returns an instance of this class.

Returns:

An instance of this class.

put

public Real put(String name,
 Real value)

Stores a constant into the table.

Parameters:

name - The name of the constant.

value - The value of the constant.

Returns:

The value previously stored under the name. May be null.

get

public Real get(String name)

Returns the constant with a given name.

Parameters:

name - The name of the constant.

Returns:

The constant with the given name. May be null if not found.