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JSci is a set of open source Java packages. The aim is to encapsulate scientific methods/principles in the most natural way possible. As such they should greatly aid the development of scientific based software. It offers: abstract math interfaces, linear algebra (support for various matrix and vector types), statistics (including probability distributions), wavelets, newtonian mechanics, chart/graph components (AWT and Swing), MathML DOM implementation, ... Note: some packages, like javax.comm, for the astro and instruments package aren't listed as dependencies (not available).

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package JSci.physics.particles;

import JSci.physics.quantum.QuantumParticle;

/**
* A class representing mesons.
* @version 1.5
* @author Mark Hale
*/
public abstract class Meson extends Hadron {
        /**
        * Constructs a meson.
        */
        public Meson() {}
        /**
        * Returns the number of 1/2 units of spin.
        * @return 0
        */
        public final int spin() {return 0;}
        /**
        * Returns the baryon number.
        * @return 0
        */
        public final int baryonQN() {return 0;}
}