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80 lines (71 loc) · 1.91 KB
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/*
* BioJava development code
*
* This code may be freely distributed and modified under the
* terms of the GNU Lesser General Public Licence. This should
* be distributed with the code. If you do not have a copy,
* see:
*
* http://www.gnu.org/copyleft/lesser.html
*
* Copyright for this code is held jointly by the individual
* authors. These should be listed in @author doc comments.
*
* For more information on the BioJava project and its aims,
* or to join the biojava-l mailing list, visit the home page
* at:
*
* http://www.biojava.org/
*
* Created on July 27, 2010
*
*/
package org.biojava.nbio.structure;
/**
* ElementType is an enumeration of the types of elements found in the periodic table.
* Each element type is further classified into Metal, Metalloid, and Non-Metal.
*
* Element types based on definition at http://www.ptable.com/
*
* @author Peter Rose
* @version %I% %G%
* @since 3.0
*/
public enum ElementType {
METALLOID(false),
OTHER_NONMETAL(false),
HALOGEN(false),
NOBLE_GAS(false),
ALKALI_METAL(true),
ALKALINE_EARTH_METAL(true),
LANTHANOID(true),
ACTINOID(true),
TRANSITION_METAL(true),
POST_TRANSITION_METAL(true),
UNKNOWN(false);
private boolean metal;
private ElementType(boolean metal) {
this.metal = metal;
}
/**
* Returns <CODE>true</CODE> if ElementType is a metal.
* @return <CODE>true</CODE> if ElementType is a metal.
*/
public boolean isMetal() {
return metal;
}
/**
* Returns <CODE>true</CODE> if ElementType is a metalloid.
* @return <CODE>true</CODE> if ElementType is a metalloid.
*/
public boolean isMetalloid() {
return this.equals(METALLOID);
}
/**
* Returns <CODE>true</CODE> if ElementType is a non-metal.
* @return <CODE>true</CODE> if ElementType is a non-metal.
*/
public boolean isNonMetal() {
return this.equals(OTHER_NONMETAL) || this.equals(HALOGEN) || this.equals(NOBLE_GAS);
}
}