Here you can find the source of sleep(TimeUnit unit, long length)
private static void sleep(TimeUnit unit, long length)
//package com.java2s; /**/*from ww w.j a va 2 s . c o m*/ * Copyright 2003-2009 Terracotta, Inc. * * 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.util.concurrent.TimeUnit; public class Main { private static void sleep(TimeUnit unit, long length) { boolean interrupted = false; try { long duration = TimeUnit.MILLISECONDS.convert(length, unit); while (duration > 0) { long start = System.currentTimeMillis(); try { Thread.sleep(duration); } catch (InterruptedException e) { interrupted = true; } long end = System.currentTimeMillis(); duration -= (end - start); } } finally { if (interrupted) { Thread.currentThread().interrupt(); } } } }