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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

eq, geq, geq, leq, leq, override, relationship, relationship, string, string

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.optimization.linear;

 * Types of relationships between two cells in a Solver {@link LinearConstraint}.
 * @version $Revision: 758920 $ $Date: 2009-03-26 19:25:30 -0400 (Thu, 26 Mar 2009) $
 * @since 2.0
public enum Relationship {

    /** Equality relationship. */

    /** Lesser than or equal relationship. */

    /** Greater than or equal relationship. */

    /** Display string for the relationship. */
    private String stringValue;

    /** Simple constructor.
     * @param stringValue display string for the relationship
    private Relationship(String stringValue) {
        this.stringValue = stringValue;

    /** {@inheritDoc} */
    public String toString() {
        return stringValue;

     * Get the relationship obtained when multiplying all coefficients by -1.
     * @return relationship obtained when multiplying all coefficients by -1
    public Relationship oppositeRelationship() {
        switch (this) {
        case LEQ :
            return GEQ;
        case GEQ :
            return LEQ;
        default :
            return EQ;


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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