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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

derivativeexception, derivativeexception, firstorderdifferentialequations, firstorderdifferentialequations

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.ode;

/** This interface represents a first order differential equations set.
 * <p>This interface should be implemented by all real first order
 * differential equation problems before they can be handled by the
 * integrators {@link FirstOrderIntegrator#integrate} method.</p>
 * <p>A first order differential equations problem, as seen by an
 * integrator is the time derivative <code>dY/dt of a state
 * vector <code>Y, both being one dimensional arrays. From the
 * integrator point of view, this derivative depends only on the
 * current time <code>t and on the state vector
 * <code>Y.

* * <p>For real problems, the derivative depends also on parameters * that do not belong to the state vector (dynamical model constants * for example). These constants are completely outside of the scope * of this interface, the classes that implement it are allowed to * handle them as they want.</p> * * @see FirstOrderIntegrator * @see FirstOrderConverter * @see SecondOrderDifferentialEquations * * @version $Revision: 811786 $ $Date: 2009-09-06 05:36:08 -0400 (Sun, 06 Sep 2009) $ * @since 1.2 */ public interface FirstOrderDifferentialEquations { /** Get the dimension of the problem. * @return dimension of the problem */ int getDimension(); /** Get the current time derivative of the state vector. * @param t current value of the independent <I>time variable * @param y array containing the current value of the state vector * @param yDot placeholder array where to put the time derivative of the state vector * @throws DerivativeException this exception is propagated to the caller if the * underlying user function triggers one */ void computeDerivatives(double t, double[] y, double[] yDot) throws DerivativeException; }

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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