XMLIsotopeFactory (cdk 2.9 API)

java.lang.Object
- org.openscience.cdk.config.IsotopeFactory
- - org.openscience.cdk.config.XMLIsotopeFactory

```
public class XMLIsotopeFactory
extends IsotopeFactory
```
Used to store and return data of a particular isotope. As this class is a singleton class, one gets an instance with:
```
 IsotopeFactory ifac = IsotopFactory.getInstance(new IChemObject().getNewBuilder());
 
```
Data about the isotopes are read from the file org.openscience.cdk.config.isotopes.xml in the cdk-standard module. Part of the data in this file was collected from the website webelements.org.
The use of this class is exemplified as follows. To get information about the major isotope of hydrogen, one can use this code:
```
   IsotopeFactory factory = XMLIsotopeFactory.getInstance(DefaultChemObjectBuilder.getInstance());
   Isotope major = factory.getMajorIsotope("H");
 
```
Author:

steinbeck

Source code:
main

Belongs to CDK module:
extra

Keywords:

isotope, element

Created on:

2001-08-29

- Field Summary
  - Fields inherited from class org.openscience.cdk.config.IsotopeFactory
    EMPTY_ISOTOPE_ARRAY, logger
- Method Summary
  
  All Methods Static Methods Concrete Methods
  Modifier and Type Method Description
  
  static XMLIsotopeFactory getInstance(IChemObjectBuilder builder)
  Returns an IsotopeFactory instance.
  - Methods inherited from class org.openscience.cdk.config.IsotopeFactory
    add, configure, configure, configureAtoms, getElement, getElement, getElementSymbol, getExactMass, getIsotope, getIsotope, getIsotopes, getIsotopes, getIsotopes, getIsotopes, getMajorIsotope, getMajorIsotope, getMajorIsotopeMass, getNaturalMass, getNaturalMass, getSize, isElement
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - getInstance
```
public static XMLIsotopeFactory getInstance(IChemObjectBuilder builder)
                                     throws IOException
```
    Returns an IsotopeFactory instance.
    
    Parameters:
    
    builder - ChemObjectBuilder used to construct the Isotope's
    
    Returns:
    
    The instance value
    
    Throws:
    
    IOException - if isotopic data files could not be read.