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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.maths.statistics;

/**
 *
 * @author Mark
 */
public class UniformDistribution extends ProbabilityDistribution {
    private final double min;
    private final double max;
    private final double range;

    public UniformDistribution(double minX, double maxX)
    {
        this.min = minX;
        this.max = maxX;
        this.range = maxX - minX;
    }

    public double probability(double X) {
        return (X >= min && X <= max ? 1.0/range : 0.0);
    }

    public double cumulative(double X) {
        if(X < min)
            return 0.0;
        else if(X <= max)
            return (X-min)/range;
        else
            return 1.0;
    }

    public double inverse(double probability) {
        return probability*range + min;
    }
}