001/* 002 * nimbus-jose-jwt 003 * 004 * Copyright 2012-2016, Connect2id Ltd and contributors. 005 * 006 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use 007 * this file except in compliance with the License. You may obtain a copy of the 008 * License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software distributed 013 * under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR 014 * CONDITIONS OF ANY KIND, either express or implied. See the License for the 015 * specific language governing permissions and limitations under the License. 016 */ 017 018package com.nimbusds.jose.util; 019 020import net.jcip.annotations.NotThreadSafe; 021 022 023/** 024 * Generic container of items of any type. 025 * 026 * <p>This class is not thread-safe, if thread safety is required it should be 027 * done externally to the class. 028 * 029 * <p>The author believes he borrowed the idea for such a class many years ago 030 * from a man called Boris Karadjov. 031 * 032 * @param <T> the type of the item in this container. 033 * 034 * @author Dimitar A. Stoikov 035 * @version 2016-10-13 036 */ 037@NotThreadSafe 038public class Container<T> { 039 040 041 /** 042 * The item. 043 */ 044 private T item; 045 046 047 /** 048 * Creates a new container with no item. 049 */ 050 public Container() { 051 } 052 053 054 /** 055 * Creates a new container with the specified item. 056 * 057 * @param item The item, may be {@code null}. 058 */ 059 public Container(final T item) { 060 this.item = item; 061 } 062 063 064 /** 065 * Gets the contained item. 066 * 067 * @return The item, {@code null} if none. 068 */ 069 public T get() { 070 return item; 071 } 072 073 074 /** 075 * Sets the contained item. 076 * 077 * @param item The item, may be {@code null}. 078 */ 079 public void set(final T item) { 080 this.item = item; 081 } 082}