Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2015 Eclipse RDF4J contributors, Aduna, and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Distribution License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *******************************************************************************/

public class Main {
    public static final String POSITIVE_INFINITY = "INF";
    public static final String NEGATIVE_INFINITY = "-INF";
    public static final String NaN = "NaN";

    /**
     * Parses the supplied xsd:double string and returns its value.
     * 
     * @param s
     *        A string representation of an xsd:double value.
     * @return The <tt>double</tt> value represented by the supplied string argument.
     * @throws NumberFormatException
     *         If the supplied string is not a valid xsd:double value.
     */
    public static double parseDouble(String s) {
        if (POSITIVE_INFINITY.equals(s)) {
            return Double.POSITIVE_INFINITY;
        } else if (NEGATIVE_INFINITY.equals(s)) {
            return Double.NEGATIVE_INFINITY;
        } else if (NaN.equals(s)) {
            return Double.NaN;
        } else {
            s = trimPlusSign(s);
            return Double.parseDouble(s);
        }
    }

    /**
     * Removes the first character from the supplied string if this is a plus sign ('+'). Number strings with
     * leading plus signs cannot be parsed by methods such as {@link Integer#parseInt(String)}.
     */
    private static String trimPlusSign(String s) {
        if (s.length() > 0 && s.charAt(0) == '+') {
            return s.substring(1);
        } else {
            return s;
        }
    }
}