Here you can find the source of round(final long timeMs, final int precision)
public static final long round(final long timeMs, final int precision)
//package com.java2s; /*/*from w w w. j a v a 2 s .c o m*/ * Copyright 2016 Crown Copyright * * 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 final long round(final long timeMs, final int precision) { final long scale = (long) Math.pow(10, precision); return ((timeMs) / scale) * scale; } }