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javax.annotation.Nonnull Maven / Gradle / Ivy

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package javax.annotation;

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

import javax.annotation.meta.TypeQualifier;
import javax.annotation.meta.TypeQualifierValidator;
import javax.annotation.meta.When;

/**
 * The annotated element must not be null.
 * 

* Annotated fields must not be null after construction has completed. *

* When this annotation is applied to a method it applies to the method return value. */ @Documented @TypeQualifier @Retention(RetentionPolicy.RUNTIME) public @interface Nonnull { When when() default When.ALWAYS; class Checker implements TypeQualifierValidator { public When forConstantValue(Nonnull qualifierArgument, Object value) { if (value == null) return When.NEVER; return When.ALWAYS; } } }





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