multiply double value With Round - Android java.lang

Android examples for java.lang:Math

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Description

multiply double value With Round

Demo Code

/*//from  w ww . j a  va  2  s  . c o  m
 * Copyright (C) 2012 www.amsoft.cn
 * 
 * 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.
 */
//package com.java2s;

import java.math.BigDecimal;

public class Main {

    public static double mulWithRound(double value1, double value2) {
        return round(mul(value1, value2));
    }

    public static BigDecimal round(double number, int decimal) {
        return new BigDecimal(number).setScale(decimal,
                BigDecimal.ROUND_HALF_UP);
    }

    public static double round(double number) {
        return round(number, 2).doubleValue();
    }

    public static double mul(double value1, double value2) {
        BigDecimal b1 = new BigDecimal(value1);
        BigDecimal b2 = new BigDecimal(value2);
        return b1.multiply(b2).doubleValue();
    }
}

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