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Commons Math example source code file (

This example Commons Math source code file ( is included in the "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Commons Math tags/keywords

abstractdistribution, abstractdistribution, distribution, distribution, io, mathexception, mathexception, serializable, serializable

The Commons Math source code

 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package org.apache.commons.math.distribution;


import org.apache.commons.math.MathException;
import org.apache.commons.math.MathRuntimeException;

 * Base class for probability distributions.
 * @version $Revision: 811685 $ $Date: 2009-09-05 13:36:48 -0400 (Sat, 05 Sep 2009) $
public abstract class AbstractDistribution
    implements Distribution, Serializable {

    /** Serializable version identifier */
    private static final long serialVersionUID = -38038050983108802L;

     * Default constructor.
    protected AbstractDistribution() {

     * For a random variable X whose values are distributed according
     * to this distribution, this method returns P(x0 ? X ? x1).
     * <p>
     * The default implementation uses the identity</p>
     * <p>
     * P(x0 ? X ? x1) = P(X ? x1) - P(X ? x0) </p>
     * @param x0 the (inclusive) lower bound
     * @param x1 the (inclusive) upper bound
     * @return the probability that a random variable with this distribution
     * will take a value between <code>x0 and x1,
     * including the endpoints.
     * @throws MathException if the cumulative probability can not be
     * computed due to convergence or other numerical errors.
     * @throws IllegalArgumentException if <code>x0 > x1
    public double cumulativeProbability(double x0, double x1)
        throws MathException {
        if (x0 > x1) {
            throw MathRuntimeException.createIllegalArgumentException(
                  "lower endpoint ({0}) must be less than or equal to upper endpoint ({1})",
                  x0, x1);
        return cumulativeProbability(x1) - cumulativeProbability(x0);

Other Commons Math examples (source code examples)

Here is a short list of links related to this Commons Math source code file:

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