exception - Why does using the Java Attach API fail on linux? (even though maven build completes) -

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i've been using java attach api (part of tools.jar) attach running java process, , shut down within.

it works on windows. when trying execute attach code when running on linux java.lang.noclassdeffounderror following stack trace cause...

java.lang.classnotfoundexception:com.sun.tools.attach.virtualmachine...     java.net.urlclassloader$1.run(urlclassloader.java:202)     java.security.accesscontroller.doprivileged(native method)     java.net.urlclassloader.findclass(urlclassloader.java:190)     java.lang.classloader.loadclass(classloader.java:306)     sun.misc.launcher$appclassloader.loadclass(launcher.java:301)     java.lang.classloader.loadclass(classloader.java:247)

i'm using maven , far have section, in order include tools.jar.

<dependency>     <groupid>com.sun</groupid>     <artifactid>tools</artifactid>     <version>1.4.2</version>     <scope>system</scope>     <systempath>${java.home}/../lib/tools.jar</systempath> </dependency>

notably ${java.home} evaluates jre if change direct path jdk, issue same.

i'm pretty stumped...

turns out issue maven build. system scope requires container pass tools.jar on classpath @ launch. simple java -jar not (and don't want add explicit classpath argument).

the solution put solve issue have maven build choose location using profiles, pre-install jar in local repo before package phase (allowing dependancy normal dependancy).

profiles section...

<profiles>     <profile>         <id>default-profile</id>         <activation>             <activebydefault>true</activebydefault>             <file>                 <exists>${java.home}/../lib/tools.jar</exists>             </file>         </activation>         <properties>             <toolsjar>${java.home}/../lib/tools.jar</toolsjar>         </properties>     </profile>     <profile>         <id>osx_profile</id>         <activation>             <activebydefault>false</activebydefault>             <os>                 <family>mac</family>             </os>         </activation>         <properties>             <toolsjar>${java.home}/../classes/classes.jar</toolsjar>         </properties>     </profile> </profiles>

install-file section...

<plugin>     <groupid>org.apache.maven.plugins</groupid>     <artifactid>maven-install-plugin</artifactid>     <executions>         <execution>             <id>jdk_tools</id>             <phase>prepare-package</phase>             <goals>                 <goal>install-file</goal>             </goals>             <configuration>                 <groupid>com.sun</groupid>                 <artifactid>tools</artifactid>                 <version>1.4.2</version>                 <packaging>jar</packaging>                 <file>${toolsjar}</file>             </configuration>         </execution>     </executions> </plugin>

dependancy

<dependency>     <groupid>com.sun</groupid>     <artifactid>tools</artifactid>     <version>1.4.2</version> </dependency>

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