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/JsonGetter.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 non-static,
 * no-argument value-returning (non-void) method to be used as a "getter"
 * for a logical property.
 * It can be used as an alternative to more general
 * {@link JsonProperty} annotation (which is the recommended choice in
 * general case).
 *<p>
 * Getter means that when serializing Object instance of class that has
 * this method (possibly inherited from a super class), a call is made
 * through the method, and return value will be serialized as value of
 * the property.
 */
@Target({ElementType.ANNOTATION_TYPE, ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@JacksonAnnotation
public @interface JsonGetter
{
    /**
     * Defines name of the logical property this
     * method is used to access ("get"); empty String means that
     * name should be derived from the underlying method (using
     * standard Bean name detection rules)
     *
     * @return Name of the logical property (or "" to use 'default',
     * if available)
     */
    String value() default "";
}

⏎ com/fasterxml/jackson/annotation/JsonGetter.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