| /* |
| * 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 java.util; |
| |
| import java.util.function.Supplier; |
| |
| import org.checkerframework.checker.nullness.qual.*; |
| |
| class Objects { |
| /** |
| * The purpose of {@code requireNonNull} is to verify if given argument is non null. |
| * Unfortunately, checkerframework requires non-nullable arguments, so this stub overrides that. |
| * Then we can use {@code requireNonNull} for defensive programming, and the verifier won't |
| * complain. |
| */ |
| @EnsuresNonNull("#1") |
| public static <T> @NonNull T requireNonNull(@Nullable T obj); |
| |
| @EnsuresNonNull("#1") |
| public static <T> @NonNull T requireNonNull(@Nullable T obj, String message); |
| |
| @EnsuresNonNull("#1") |
| public static <T> @NonNull T requireNonNull(@Nullable T obj, Supplier<String> messageSupplier); |
| } |