Java tutorial
/**************************************************************** * Licensed to the Apache Software Foundation (ASF) under one * * or more contributor license agreements. See the NOTICE file * * distributed with this work for additional information * * regarding copyright ownership. The ASF licenses this file * * to you 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. * ****************************************************************/ package org.apache.james.queue.rabbitmq; import java.time.Clock; import java.time.Instant; import java.time.ZoneId; import org.apache.commons.lang3.NotImplementedException; class UpdatableTickingClock extends Clock { private Instant currentInstant; UpdatableTickingClock(Instant currentInstant) { this.currentInstant = currentInstant; } void setInstant(Instant instant) { currentInstant = instant; } @Override public ZoneId getZone() { throw new NotImplementedException("No timezone attached to this clock"); } @Override public Clock withZone(ZoneId zone) { throw new NotImplementedException("No timezone attached to this clock"); } @Override public Instant instant() { return currentInstant; } synchronized void tick() { currentInstant = currentInstant.plusMillis(1); } }