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Java example source code file (Interval.java)

This example Java source code file (Interval.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

deprecated, interval, location

The Interval.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.geometry.euclidean.oned;

import org.apache.commons.math3.geometry.partitioning.Region.Location;
import org.apache.commons.math3.exception.NumberIsTooSmallException;
import org.apache.commons.math3.exception.util.LocalizedFormats;


/** This class represents a 1D interval.
 * @see IntervalsSet
 * @since 3.0
 */
public class Interval {

    /** The lower bound of the interval. */
    private final double lower;

    /** The upper bound of the interval. */
    private final double upper;

    /** Simple constructor.
     * @param lower lower bound of the interval
     * @param upper upper bound of the interval
     */
    public Interval(final double lower, final double upper) {
        if (upper < lower) {
            throw new NumberIsTooSmallException(LocalizedFormats.ENDPOINTS_NOT_AN_INTERVAL,
                                                upper, lower, true);
        }
        this.lower = lower;
        this.upper = upper;
    }

    /** Get the lower bound of the interval.
     * @return lower bound of the interval
     * @since 3.1
     */
    public double getInf() {
        return lower;
    }

    /** Get the lower bound of the interval.
     * @return lower bound of the interval
     * @deprecated as of 3.1, replaced by {@link #getInf()}
     */
    @Deprecated
    public double getLower() {
        return getInf();
    }

    /** Get the upper bound of the interval.
     * @return upper bound of the interval
     * @since 3.1
     */
    public double getSup() {
        return upper;
    }

    /** Get the upper bound of the interval.
     * @return upper bound of the interval
     * @deprecated as of 3.1, replaced by {@link #getSup()}
     */
    @Deprecated
    public double getUpper() {
        return getSup();
    }

    /** Get the size of the interval.
     * @return size of the interval
     * @since 3.1
     */
    public double getSize() {
        return upper - lower;
    }

    /** Get the length of the interval.
     * @return length of the interval
     * @deprecated as of 3.1, replaced by {@link #getSize()}
     */
    @Deprecated
    public double getLength() {
        return getSize();
    }

    /** Get the barycenter of the interval.
     * @return barycenter of the interval
     * @since 3.1
     */
    public double getBarycenter() {
        return 0.5 * (lower + upper);
    }

    /** Get the midpoint of the interval.
     * @return midpoint of the interval
     * @deprecated as of 3.1, replaced by {@link #getBarycenter()}
     */
    @Deprecated
    public double getMidPoint() {
        return getBarycenter();
    }

    /** Check a point with respect to the interval.
     * @param point point to check
     * @param tolerance tolerance below which points are considered to
     * belong to the boundary
     * @return a code representing the point status: either {@link
     * Location#INSIDE}, {@link Location#OUTSIDE} or {@link Location#BOUNDARY}
     * @since 3.1
     */
    public Location checkPoint(final double point, final double tolerance) {
        if (point < lower - tolerance || point > upper + tolerance) {
            return Location.OUTSIDE;
        } else if (point > lower + tolerance && point < upper - tolerance) {
            return Location.INSIDE;
        } else {
            return Location.BOUNDARY;
        }
    }

}

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