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Java example source code file (DummyListChromosome.java)

This example Java source code file (DummyListChromosome.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

abstractlistchromosome, dummylistchromosome, integer, invalidrepresentationexception, list, object, override, util

The DummyListChromosome.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,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.commons.math3.genetics;

import java.util.Arrays;
import java.util.List;

/**
 * Implementation of ListChromosome for testing purposes
 */
public class DummyListChromosome extends AbstractListChromosome<Integer> {
    public DummyListChromosome(final Integer[] representation) {
        super(representation);
    }

    public DummyListChromosome(final List<Integer> representation) {
        super(representation);
    }

    public double fitness() {
        // Not important.
        return 0;
    }

    @Override
    protected void checkValidity(final List<Integer> chromosomeRepresentation) throws InvalidRepresentationException {
        // Not important.
    }

    @Override
    public AbstractListChromosome<Integer> newFixedLengthChromosome(final List chromosomeRepresentation) {
        return new DummyListChromosome(chromosomeRepresentation);
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + (getRepresentation() == null ? 0 : getRepresentation().hashCode());
        return result;
    }

    @Override
    public boolean equals(final Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (!(obj instanceof DummyListChromosome)) {
            return false;
        }
        final DummyListChromosome other = (DummyListChromosome) obj;
        if (getRepresentation() == null) {
            if (other.getRepresentation() != null) {
                return false;
            }
        }
        final Integer[] rep = getRepresentation().toArray(new Integer[getRepresentation().size()]);
        final Integer[] otherRep = other.getRepresentation().toArray(new Integer[other.getRepresentation().size()]);
        return Arrays.equals(rep, otherRep);
    }
}

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