| career | drupal | java | mac | mysql | perl | scala | uml | unix  

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

bigreal, bigreal, bigrealfield, bigrealfield, field, instance, io, lazyholder, object, object, 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.util;


import org.apache.commons.math.Field;

 * Representation of real numbers with arbitrary precision field.
 * <p>
 * This class is a singleton.
 * </p>
 * @see BigReal
 * @version $Revision: 811827 $ $Date: 2009-09-06 11:32:50 -0400 (Sun, 06 Sep 2009) $
 * @since 2.0
public class BigRealField implements Field<BigReal>, Serializable  {

    /** Serializable version identifier */
    private static final long serialVersionUID = 4756431066541037559L;

    /** Private constructor for the singleton.
    private BigRealField() {

    /** Get the unique instance.
     * @return the unique instance
    public static BigRealField getInstance() {
        return LazyHolder.INSTANCE;

    /** {@inheritDoc} */
    public BigReal getOne() {
        return BigReal.ONE;

    /** {@inheritDoc} */
    public BigReal getZero() {
        return BigReal.ZERO;

    // CHECKSTYLE: stop HideUtilityClassConstructor
    /** Holder for the instance.
     * <p>We use here the Initialization On Demand Holder Idiom.

*/ private static class LazyHolder { /** Cached field instance. */ private static final BigRealField INSTANCE = new BigRealField(); } // CHECKSTYLE: resume HideUtilityClassConstructor /** Handle deserialization of the singleton. * @return the singleton instance */ private Object readResolve() { // return the singleton instance return LazyHolder.INSTANCE; } }

Other Commons Math examples (source code examples)

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

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller


new blog posts


Copyright 1998-2021 Alvin Alexander,
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.