1 /** 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.server.broadcastradio.hal2; 18 19 /** 20 * A wrapper class for mutable objects to be used in non-mutable contexts 21 * (i.e. final variables catched in lambda closures). 22 * 23 * @param <E> type of boxed value. 24 */ 25 final class Mutable<E> { 26 /** 27 * A mutable value. 28 */ 29 public E value; 30 31 /** 32 * Initialize value with null pointer. 33 */ 34 public Mutable() { 35 value = null; 36 } 37 38 /** 39 * Initialize value with specific value. 40 * 41 * @param value initial value. 42 */ 43 public Mutable(E value) { 44 this.value = value; 45 } 46 } 47
