001/* 002 * Copyright 2002-2017 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.scheduling.config; 018 019import org.springframework.util.Assert; 020 021/** 022 * Holder class defining a {@code Runnable} to be executed as a task, typically at a 023 * scheduled time or interval. See subclass hierarchy for various scheduling approaches. 024 * 025 * @author Chris Beams 026 * @author Juergen Hoeller 027 * @since 3.2 028 */ 029public class Task { 030 031 private final Runnable runnable; 032 033 034 /** 035 * Create a new {@code Task}. 036 * @param runnable the underlying task to execute 037 */ 038 public Task(Runnable runnable) { 039 Assert.notNull(runnable, "Runnable must not be null"); 040 this.runnable = runnable; 041 } 042 043 044 /** 045 * Return the underlying task. 046 */ 047 public Runnable getRunnable() { 048 return this.runnable; 049 } 050 051 052 @Override 053 public String toString() { 054 return this.runnable.toString(); 055 } 056 057}