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/*
 * Copyright 2002-2017 the original author or authors.
 *
 * 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
 *
 *      https://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 org.springframework.lang;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

import javax.annotation.Nonnull;
import javax.annotation.meta.TypeQualifierDefault;

/**
 * A common Spring annotation to declare that parameters and return values
 * are to be considered as non-nullable by default for a given package.
 *
 * 

Leverages JSR-305 meta-annotations to indicate nullability in Java to common * tools with JSR-305 support and used by Kotlin to infer nullability of Spring API. * *

Should be used at package level in association with {@link Nullable} * annotations at parameter and return value level. * * @author Sebastien Deleuze * @author Juergen Hoeller * @since 5.0 * @see NonNullFields * @see Nullable * @see NonNull */ @Target(ElementType.PACKAGE) @Retention(RetentionPolicy.RUNTIME) @Documented @Nonnull @TypeQualifierDefault({ElementType.METHOD, ElementType.PARAMETER}) public @interface NonNullApi { }





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