Here you can find the source of toDouble(BigDecimal b, boolean allownull)
public static Double toDouble(BigDecimal b, boolean allownull)
//package com.java2s; /*/*from w w w. j av a2 s . c om*/ * Copyright 2015 stanislawbartkowski@gmail.com * Licensed 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. */ import java.math.BigDecimal; public class Main { public static Double toDouble(BigDecimal b, boolean allownull) { if (allownull && b == null) return null; return b.doubleValue(); } }