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Java example source code file (ParameterizedWrapper.java)

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

Learn more about this Java project at its project page.

Java - Java tags/keywords

arraylist, collection, dimensionmismatchexception, firstorderdifferentialequations, maxcountexceededexception, parameterizedode, parameterizedwrapper, unknownparameterexception, util

The ParameterizedWrapper.java Java example 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
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 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.math3.ode;

import java.util.ArrayList;
import java.util.Collection;

import org.apache.commons.math3.exception.DimensionMismatchException;
import org.apache.commons.math3.exception.MaxCountExceededException;

/** Wrapper class enabling {@link FirstOrderDifferentialEquations basic simple}
 *  ODE instances to be used when processing {@link JacobianMatrices}.
 * @since 3.0
class ParameterizedWrapper implements ParameterizedODE {

    /** Basic FODE without parameter. */
    private final FirstOrderDifferentialEquations fode;

    /** Simple constructor.
     * @param ode original first order differential equations
    ParameterizedWrapper(final FirstOrderDifferentialEquations ode) {
        this.fode = ode;

    /** Get the dimension of the underlying FODE.
     * @return dimension of the underlying FODE
    public int getDimension() {
        return fode.getDimension();

    /** Get the current time derivative of the state vector of the underlying FODE.
     * @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
     * @exception MaxCountExceededException if the number of functions evaluations is exceeded
     * @exception DimensionMismatchException if arrays dimensions do not match equations settings
    public void computeDerivatives(double t, double[] y, double[] yDot)
        throws MaxCountExceededException, DimensionMismatchException {
        fode.computeDerivatives(t, y, yDot);

    /** {@inheritDoc} */
    public Collection<String> getParametersNames() {
        return new ArrayList<String>();

    /** {@inheritDoc} */
    public boolean isSupported(String name) {
        return false;

    /** {@inheritDoc} */
    public double getParameter(String name)
        throws UnknownParameterException {
        if (!isSupported(name)) {
            throw new UnknownParameterException(name);
        return Double.NaN;

    /** {@inheritDoc} */
    public void setParameter(String name, double value) {


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