JDK com.sun.tools not found after Maven install

Question

My Problem (with MAVEN) just exist on Windows (not Linux) and not Inside the IDE (Eclipse)

Class:

    ...

    System.out.println("Location of Tools --> " + VirtualMachine.class.getProtectionDomain().getCodeSource().getLocation());

    ...

Exception:

        Exception in thread "main" java.lang.NoClassDefFoundError: com/sun/tools/attach/VirtualMachine
                at my.package.bootstrap(Controller.java:37)
                at my.package.main(Main.java:35)
        Caused by: java.lang.ClassNotFoundException: com.sun.tools.attach.VirtualMachine
                at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
                at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
                at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
                at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
                ... 2 more

My Environment:

Windows: Windows 10 (Here are the Problems!!!)
Linux: Xubuntu 16.04 (Works fine)
Java: 8 oracle (not openjdk!)
Maven (**using the maven-assembly-plugin for installing**)

My Project Architecture:

My Project which using the com.sun.tools is a library: lib.jar
which gets used by Main Project: Main.jar.

I'm using maven to compile all of that into Main.jar

What works:

Linux Eclipse IDE: found
Linux - Shell: java -jar myjar.jar: found

Windows Eclipse IDE: found
--> Windows - Bash: /java_jdk_path/java -jar myjar.jar: _NOT_FOUND_

My not-working-solutions to make it find the lib on windows in main.jar:

set %JAVA_HOME%  ... to jdk
set %JRE_HOME% ... to jre

I found a lot of workarounds like i.e. maven profiles and so on, I tested all of them but nothing worked. One time I got it worked, when I copyed the com.sun.tools via maven plugin (mvn install...) into the JAR. Then it worked.

But I need it to find the com.sun.tools dynamically - depending on the operating system linux and windows.

Any suggestions for my next steps? I don't know what I could do that it works. I always get this exception when using this tools.jar on windows after executing it with ...java -jar Main.jar

Goal: I want to start Main.jar (java -jar Main.jar) on any folder I want.

---

UPDATE: I added a sample Project, which fails for me exactly with this error.

Just create a new Maven Project and add this to Main.java and to POM. Install it with: mvn install and it fails. Use the eclipse jar builder and it works!??? WTF Why?

Code:

    ...

    System.out.println("Location of Tools --> " + VirtualMachine.class.getProtectionDomain().getCodeSource().getLocation());

    ...

POM:

    <properties>
            <java.version>1.8</java.version>
            <maven.compiler.source>1.8</maven.compiler.source>
            <maven.compiler.target>1.8</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency>
            <groupId>com.sun</groupId>
            <artifactId>tools</artifactId>
            <version>1.8</version>
            <scope>system</scope>
            <systemPath>${env.JAVA_HOME}/lib/tools.jar</systemPath>
        </dependency>
    </dependencies>

    <build>
            <plugins>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-assembly-plugin</artifactId>
                    <version>3.0.0</version>
                    <configuration>
                        <outputDirectory>C:\Output\</outputDirectory>
                        <archive>
                            <manifest>
                                <mainClass>com.test.Main</mainClass>
                            </manifest>
                        </archive>
                        <descriptorRefs>
                            <descriptorRef>jar-with-dependencies</descriptorRef>
                        </descriptorRefs>
                        <appendAssemblyId>false</appendAssemblyId>
                    </configuration>
                    <executions>
                        <execution>
                            <id>make-assembly</id> <!-- this is used for inheritance merges -->
                            <phase>package</phase> <!-- bind to the packaging phase -->
                            <goals>
                                <goal>single</goal>
                            </goals>
                        </execution>
                    </executions>
                </plugin>
            </plugins>
    </build>

Answer 1

I know its not the solution for the current problem, but I am using a workaround and I can recommend it to any other. I am using https://github.com/oshi/oshi now, because it has all the features what I need and wanted to get with that com.sun.tools.

But Anyway it would be nice to hear if anyone has a working solution for this maven install (maybe maven {java.home} bug?) problem.