Java tutorial
//package com.java2s; /******************************************************************************* * * Copyright (c) 2016 Mickael Gizthon . All rights reserved. Email:2013mzhou@gmail.com * * 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 String convertOneDecimal(double price) { BigDecimal decimal = new BigDecimal(price); return decimal.setScale(1, BigDecimal.ROUND_HALF_UP).toString(); } }