1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Eclipse Public License, Version 1.0 (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.eclipse.org/org/documents/epl-v10.php 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.annotations; 18 19 import java.lang.annotation.Retention; 20 import java.lang.annotation.RetentionPolicy; 21 22 /** 23 * Denotes a parameter or field can be null. 24 * <p/> 25 * When decorating a method call parameter, this denotes the parameter can 26 * legitimately be null and the method will gracefully deal with it. Typically used 27 * on optional parameters. 28 * <p/> 29 * When decorating a method, this denotes the method might legitimately return null. 30 * <p/> 31 * This is a marker annotation and it has no specific attributes. 32 */ 33 @Retention(RetentionPolicy.SOURCE) 34 public @interface Nullable { 35 } 36
