java.lang.IllegalAccessError: class lombok.javac.apt.LombokProcessor cannot access class com.sun.tools.javac.processing.JavacProcessingEnvironment

I am somewhat new to coding and am trying to use the Lombok plugin to automatically create Getters/Setters e.t.c. for my fields of a specific class. In doing so I get greeted with the following error:

The error:

> java: java.lang.IllegalAccessError: class lombok.javac.apt.LombokProcessor (in unnamed module @0x3b67ef9b) cannot access class com.sun.tools.javac.processing.JavacProcessingEnvironment (in module jdk.compiler) because module jdk.compiler does not export com.sun.tools.javac.processing to unnamed module @0x3b67ef9b

After doing some searching online, I found out that this error is related to an issue in OpenJDK 15 but I am currently using OpenJDK 16, hence why I am confused that I am still getting this error.

This thread claims to have a solution: https://github.com/rzwitserloot/lombok/issues/2681#issuecomment-748616687 but after implementing the plugin, it does not seem to make any difference and I still receive the error.

I have most likely made a trivial mistake since I am a beginner but if someone knows what I am missing please let me know.

Class Using @Data (Lombok):

import lombok.Data;

@Data
public class Ingredient {

    private final String id;
    private final String name;
    private final Type type;

    public enum Type {
        WRAP, PROTEIN, VEGGIES, CHEESE, SAUCE
    }

}

My Pom File:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.4.4</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>sia</groupId>
	<artifactId>taco-cloud</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>taco-cloud</name>
	<description>Taco Cloud Project</description>
	<properties>
		<java.version>16</java.version>
	</properties>
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-thymeleaf</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-devtools</artifactId>
			<scope>runtime</scope>
			<optional>true</optional>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
		</dependency>
	</dependencies>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>

</project>

Switch to at least the 1.18.22 version of Lombok that contains the fix

<dependency>
  <groupId>org.projectlombok</groupId>
  <artifactId>lombok</artifactId>
  <version>1.18.22</version>
</dependency>

To see the last version of lombok, follow this link on search.maven.org

@FrankyFred has provided a temporary solution to be able to use Lombok: https://stackoverflow.com/a/66981165/12586904

---

As far as my research goes and the various responses that I received to this question, it seems like there is no possible way of running Lombok currently in OpenJDK 16. As such, an alternative to using Lombok is to put the @data methods manually in your code. The following link briefly explains how to do this in case you are new to this topic: https://javabydeveloper.com/lombok-data-annotation/#:~:text=Lombok%20Data%20annotation%20(%20%40Data%20),as%20well%20as%20a%20constructor.

Sample pseudo code representing what @Data really represents:

@Getter @Setter 
@RequiredArgsConstructor
@ToString 
@EqualsAndHashCode
public class User1 {
  private Long id;
  private String username;
  
}

The Lombok @Data annotation minimizes the usage of more annotations when you need to generate all the above seven requirements, but they essentially achieve the same objectives when running the code.

I am by no means an expert at this, but hopefully, this will help anyone else who gets stuck using Lombok but needs to find an alternative since their book/tutorial might utilize it and u would still like to continue with the book/tutorial.

It seems can be solved by adding plugin in pom.xml

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>3.8.1</version>
    <configuration>
        <source>16</source>
        <target>16</target>
        <!--                    <release>16</release>-->
        <fork>true</fork>
        <compilerArgs>
            <arg>--enable-preview</arg>
            <arg>-Xlint:all</arg>
            <arg>-J--add-opens=jdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED</arg>
            <arg>-J--add-opens=jdk.compiler/com.sun.tools.javac.comp=ALL-UNNAMED</arg>
            <arg>-J--add-opens=jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED</arg>
            <arg>-J--add-opens=jdk.compiler/com.sun.tools.javac.main=ALL-UNNAMED</arg>
            <arg>-J--add-opens=jdk.compiler/com.sun.tools.javac.model=ALL-UNNAMED</arg>
            <arg>-J--add-opens=jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED</arg>
            <arg>-J--add-opens=jdk.compiler/com.sun.tools.javac.processing=ALL-UNNAMED</arg>
            <arg>-J--add-opens=jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED</arg>
            <arg>-J--add-opens=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED</arg>
            <arg>-J--add-opens=jdk.compiler/com.sun.tools.javac.jvm=ALL-UNNAMED</arg>
        </compilerArgs>
        <!--for unmappable characters in classes-->
        <encoding>UTF-8</encoding>
        <showDeprecation>true</showDeprecation>
        <showWarnings>true</showWarnings>
        <!--for lombok annotations to resolve-->
        <!--contradictory to maven, intelliJ fails with this-->
        <annotationProcessorPaths>
            <path>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>1.18.16</version>
            </path>
        </annotationProcessorPaths>
    </configuration>
</plugin>

solution from https://stackoverflow.com/questions/65380359/lomboks-access-to-jdk-compilers-internal-packages-incompatible-with-java-16