Here you can find the source of waitFor(Object obj)
public static void waitFor(Object obj)
//package com.java2s; /*//from w ww.j a v a 2 s.com * #%L * rapidoid-commons * %% * Copyright (C) 2014 - 2016 Nikolche Mihajlovski and contributors * %% * 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. * #L% */ import java.util.concurrent.*; public class Main { public static void waitFor(Object obj) { try { synchronized (obj) { obj.wait(); } } catch (InterruptedException e) { // do nothing } } public static void wait(CountDownLatch latch) { try { latch.await(); } catch (InterruptedException e) { throw new CancellationException(); } } public static void wait(CountDownLatch latch, long timeout, TimeUnit unit) { try { latch.await(timeout, unit); } catch (InterruptedException e) { throw new CancellationException(); } } }