Here you can find the source of celsiusToFahrenheit(Double celsius)
public static Double celsiusToFahrenheit(Double celsius)
//package com.java2s; /**//from ww w .ja v a2s .c o m * Copyright (c) 2010-2018 by the respective copyright holders. * * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html */ import java.math.BigDecimal; public class Main { private static final BigDecimal ONE_POINT_EIGHT = new BigDecimal("1.8"); private static final BigDecimal THIRTY_TWO = new BigDecimal("32"); /** * Converts celsius to fahrenheit. */ public static Double celsiusToFahrenheit(Double celsius) { return celsius == null ? null : new BigDecimal(celsius).multiply(ONE_POINT_EIGHT).add(THIRTY_TWO).doubleValue(); } }