Here you can find the source of roundStr(Double value, int decimal)
public static String roundStr(Double value, int decimal)
//package com.java2s; /*// ww w. ja v a 2 s . c om * Created on 01.02.2005 * * JDBReport Generator * * Copyright (C) 2005-2014 Andrey Kholmanskih * * 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. * */ public class Main { public static String roundStr(Double value, int decimal) { return String.format("%1." + decimal + "f", value); } }