Jackson is "the Java JSON library" or "the best JSON parser for Java". Or simply as "JSON for Java".

Jackson Annotations Source Code files are provided in the source packge (jackson-annotations-2.14.0-sources.jar). You can download it at Jackson Maven Website.

You can also browse Jackson Annotations Source Code below:

⏎ com/fasterxml/jackson/annotation/JsonEnumDefaultValue.java

package com.fasterxml.jackson.annotation;

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

/**
 * Marker annotation that can be used to define a default value
 * used when trying to deserialize unknown Enum values.
 * <p>
 * This annotation is only applicable when the <code>@READ_UNKNOWN_ENUM_VALUES_USING_DEFAULT_VALUE</code>
 * deserialization feature is enabled.
 * <p>
 * If the more than one enum value is marked with this annotation,
 * the first one to be detected will be used. Which one exactly is undetermined.
 */
@Target({ElementType.ANNOTATION_TYPE, ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
@JacksonAnnotation
public @interface JsonEnumDefaultValue
{

}

⏎ com/fasterxml/jackson/annotation/JsonEnumDefaultValue.java

Or download all of them as a single archive file:

File name: jackson-annotations-2.14.0-sources.jar
File size: 80402 bytes
Release date: 2022-11-05
Download 

⇒ Jackson Dataformat Extensions

⇐ Jackson Data Binding Source Code

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⇑⇑ Jackson - Java JSON library