Could not find artifact com.sun:tools:jar:0

Question

I'm trying to use checkstyle and findbugs by doing mvn checkstyle:checkstyle but I have this error This error

[ERROR] Failed to execute goal on project my-project: Could not resolve dependencies for project default:my-project:jar:1.1: Could not find artifact com.sun:tools:jar:0 at specified path C:\Program Files\Java\jdk-11.0.2/../lib/tools.jar -> [Help 1]

I do not have a tools.jar into my JDK (i have jdk-11.0.2).

I'm on it since 2H, please help :/

Answer 1

tools.jar removed from Java 9+

You're on JDK 11. No tools.jar found there.

JEP 220: Modular Run-Time Images removed both tools.jar and rt.jar from the lib folder, as of Java 9.

Removed: rt.jar and tools.jar

The class and resource files previously stored in lib/rt.jar, lib/tools.jar, lib/dt.jar, and various other internal JAR files are now stored in a more efficient format in implementation-specific files in the lib directory. The format of these files is not specified and is subject to change without notice.

This change is part of adding the Java Platform Module System, a.k.a. Project Jigsaw.

To upgrade Checkstyle, use later versions, such as:

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-checkstyle-plugin</artifactId>
    <version>3.0.0</version>
    <dependencies>
        <dependency>
            <groupId>com.puppycrawl.tools</groupId>
            <artifactId>checkstyle</artifactId>
            <version>8.18</version>
        </dependency>
    </dependencies>
</plugin>

Notice the inner dependency block.

Consult a Maven repo for versions of Apache Maven Checkstyle Plugin and of Checkstyle.