org.forstdb.Holder Maven / Gradle / Ivy
// Copyright (c) 2016, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
package org.forstdb;
/**
* Simple instance reference wrapper.
*/
public class Holder {
private /* @Nullable */ T value;
/**
* Constructs a new Holder with null instance.
*/
public Holder() {
}
/**
* Constructs a new Holder.
*
* @param value the instance or null
*/
public Holder(/* @Nullable */ final T value) {
this.value = value;
}
/**
* Get the instance reference.
*
* @return value the instance reference or null
*/
public /* @Nullable */ T getValue() {
return value;
}
/**
* Set the instance reference.
*
* @param value the instance reference or null
*/
public void setValue(/* @Nullable */ final T value) {
this.value = value;
}
}