Java 11 include jdk.compiler/com.sun.tools.javac classes into project

Question

I need to work with com.sun.tools.javac classes that are private and are not visible neither during compile nor run time.

I use:

JDK 11.0.15
Maven build tool
Intellij IDEA

My current state is that my imports are red-highlghited and compilation fails.

My class I want to use sun tools inside (sorry for the pic instead of code, my class is 2000+ lines length, for now I only care about availability of tools in my class):

pom.xml:

...

<properties>
    <maven.compiler.source>11</maven.compiler.source>
    <maven.compiler.target>11</maven.compiler.target>
</properties>

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.8.0</version>
            <configuration>
                <source>11</source>
                <target>11</target>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-javadoc-plugin</artifactId>
            <version>2.9.1</version>
            <executions>
                <execution>
                    <id>attach-javadocs</id>
                    <goals>
                        <goal>jar</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>

        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-source-plugin</artifactId>
            <version>2.2.1</version>
            <executions>
                <execution>
                    <id>attach-sources</id>
                    <goals>
                        <goal>jar</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

I need to be able to have these classes available as I "type", during mvn compile and in runtime.

com.sun packages I'd like to have:

com.sun.tools.javac.code
com.sun.tools.javac.comp
com.sun.tools.javac.file
com.sun.tools.javac.main
com.sun.tools.javac.model
com.sun.tools.javac.parser
com.sun.tools.javac.processing
com.sun.tools.javac.tree
com.sun.tools.javac.util

Thank you in advance!

score 1 · Answer 1 · answered Jul 19 '22 at 14:29

I was able to make it work with the following compiler plugin configuration.

<compilerArgs>
                    <arg>--add-opens=jdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED</arg>
                    <arg>--add-opens=jdk.compiler/com.sun.tools.javac.comp=ALL-UNNAMED</arg>
                    <arg>--add-opens=jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED</arg>
                    <arg>--add-opens=jdk.compiler/com.sun.tools.javac.main=ALL-UNNAMED</arg>
                    <arg>--add-opens=jdk.compiler/com.sun.tools.javac.model=ALL-UNNAMED</arg>
                    <arg>--add-opens=jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED</arg>
                    <arg>--add-opens=jdk.compiler/com.sun.tools.javac.processing=ALL-UNNAMED</arg>
                    <arg>--add-opens=jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED</arg>
                    <arg>--add-opens=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED</arg>

                    <arg>--add-exports=jdk.compiler/com.sun.tools.javac.code=ALL-UNNAMED</arg>
                    <arg>--add-exports=jdk.compiler/com.sun.tools.javac.comp=ALL-UNNAMED</arg>
                    <arg>--add-exports=jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED</arg>
                    <arg>--add-exports=jdk.compiler/com.sun.tools.javac.main=ALL-UNNAMED</arg>
                    <arg>--add-exports=jdk.compiler/com.sun.tools.javac.model=ALL-UNNAMED</arg>
                    <arg>--add-exports=jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED</arg>
                    <arg>--add-exports=jdk.compiler/com.sun.tools.javac.processing=ALL-UNNAMED</arg>
                    <arg>--add-exports=jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED</arg>
                    <arg>--add-exports=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED</arg>
                </compilerArgs>

And other thing that broke my code was maven-javadoc-plugin added to my plugins.

Basil Bourque · Answer 2 · 2022-07-18T16:58:56.420

0

The Javadoc for package com.sun.tools.javac in Java 11 says:

This package provides a legacy entry point for the javac tool. See the jdk.compiler module for details on replacement APIs.

Access the module java.compiler, package javax.tools, for the interface JavaCompiler and class ToolProvider.

See the Javadoc for example code.

The com.sun package was never standard, never supported, and never intended for external use.

See JEP 403: Strongly Encapsulate JDK Internals.

edited Jul 18 '22 at 16:58

answered Jul 18 '22 at 16:15

Basil Bourque

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Anyways there should be a workaround for this. Is there any "illegal" approauch to make this work? – Serhii Kachan Jul 18 '22 at 16:52
Do you need more than the classes in [`com.sun.source.tree`](https://docs.oracle.com/en/java/javase/11/docs/api/jdk.compiler/com/sun/source/tree/package-summary.html) provide? – Johannes Kuhn Jul 18 '22 at 18:09
@Johannes Kuhn Updated the question with required packages of sun I need. – Serhii Kachan Jul 18 '22 at 19:20

Java 11 include jdk.compiler/com.sun.tools.javac classes into project

2 Answers2