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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed 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 android.annotation;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.PARAMETER;
import static java.lang.annotation.RetentionPolicy.SOURCE;
/**
* Denotes that a parameter, field or method return value can be null.
* <p>
* When decorating a method call parameter, this denotes that the parameter can
* legitimately be null and the method will gracefully deal with it. Typically
* used on optional parameters.
* <p>
* When decorating a method, this denotes the method might legitimately return
* null.
* <p>
* This is a marker annotation and it has no specific attributes.
*
* @hide
*/
@Retention(SOURCE)
@Target({METHOD, PARAMETER, FIELD})
public @interface Nullable {
}
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