Class JavaLaunchHelper is implemented in both libinstrument dylib One of the two will be used Which one is undefined

Question

I upgraded to the latest Java 7u40 on MacOS X and started getting the following message on the console when launching my application using Eclipse  The app works fine but I would like to find out the cause of the problem and hopefully a fix for it    objc 10012   Class JavaLaunchHelper is implemented in both  Library Java JavaVirtualMachines jdk1 7 0 40 jdk Contents Home bin java and  Library Java JavaVirtualMachines jdk1 7 0 40 jdk Contents Home jre lib libinstrument dylib  One of the two will be used  Which one is undefined    Does anyone know why this message is printed and how to fix it

User · Answer

July 2019 OSX Mojave 10 14 5  18F132  IntelliJ 2019-1 Community Edition  It worked setting idea properties file  I also configured JAVA HOME pointing to  Library Java JavaVirtualMachines jdk1 8 0 121 jdk Contents Home  custom IntelliJ IDEA properties idea rt idea no launcher true

User · Answer

Well  after some struggling  what worked for me was completely removing the current JDK  as described here   sudo rm -rf  Library Java JavaVirtualMachines jdk1 7 0 80 jdk sudo rm -rf  Library PreferencePanes JavaControlPanel prefPane sudo rm -rf  Library Internet  Plug-Ins JavaAppletPlugin plugin sudo rm -rf  Library LaunchAgents com oracle java Java-Updater plist sudo rm -rf  Library PrivilegedHelperTools com oracle java JavaUpdateHelper sudo rm -rf  Library LaunchDaemons com oracle java JavaUpdateHelper plist sudo rm -rf  Library Preferences com oracle java Helper-Tool plist   Then installed 1 7 0 21  which was downloaded from here   Now java -version prompts   java version  1 7 0 21  Java TM  SE Runtime Environment  build 1 7 0 21-b12  Java HotSpot TM  64-Bit Server VM  build 23 21-b01  mixed mode

User · Answer

Install Java 7u21 from  http   www oracle com technetwork java javase downloads java-archive-downloads-javase7-521261 html jdk-7u21-oth-JPR Set these variables   export JAVA HOME  Library Java JavaVirtualMachines jdk1 7 0 21 jdk Contents Home export PATH  JAVA HOME bin  PATH  Run your app and have fun

User · Answer

To solve this issue  I downgraded to JDK version 1 7 0 21  then I used this little bash script to change the version I use   function setjdk       if      -ne 0    then    removeFromPath   System Library Frameworks JavaVM framework Home bin     if   -n    JAVA HOME x      then     removeFromPath  JAVA HOME    fi    export JAVA HOME   usr libexec java home -v        export PATH  JAVA HOME bin  PATH   fi      function removeFromPath       export PATH   echo  PATH   sed -E -e  s   1    -e  s  1            Once you have the bash script in your zshrc bshrc file  just call setJdk 1 7 0 21 and you re good to go

User · Answer

jdk-7u80-macosx-x64 dmg fix this problem

User · Answer

Not sure if this is the cause of the problem  but I got this issue only after installing JVM Monitor   Uninstalling JVM Monitor solved the issue for me

User · Answer

Copy Pasting  Lichtamberg s comments to gotoalberto s answer  Works also for Java 1 8      in    zshrc and    bashrc  export JAVA HOME  Library Java JavaVirtualMachines jdk1 8 0 92 jdk Contents Home  export PATH  JAVA HOME bin  PATH    This fixed my issue on java 8

User · Answer

For JetBrains IntelliJ IDEA  Go to  Help - gt  Edit Custom Properties     Create the file if it asks you to create it  To disable the error message paste the following to the file you created  idea rt idea no launcher true  This will take effect on the restart of the IntelliJ

User · Answer

As other answers detail  this is a bug in the JDK  up to u45  which will be fixed in JDK7u60 - while this is not out yet  you may download the b01 from  https   jdk7 java net download html  It s beta  but fixed that issue for me

User · Answer

https   groups google com forum   topic google-appengine-stackoverflow QZGJg2tlfA4  From what I ve found online  this is a bug introduced in JDK 1 7 0 45  I ve read it will be fixed in the next release of Java  but it s not out yet  Supposedly  it was fixed in 1 7 0 60b01  but I can t find where to download it and 1 7 0 60b02 re-introduces the bug   I managed to get around the problem by reverting back to JDK 1 7 0 25  Probably not the solution you wanted  but it s the only way I ve been able to get it working  Don t forget add JDK 1 7 0 25 in Eclipse after installing the JDK   Please DO NOT REPLY directly to this email but go to StackOverflow  Class JavaLaunchHelper is implemented in both  One of the two will be used  Which one is undefined

User · Answer

If you re using IntelliJ  amp  Mac just go to Project structure -  SDK and make sure that there is Java listed but it points to sth like    Library Java JavaVirtualMachines jdk1 8 0 131 jdk Contents Home   Rather than user home

User · Answer

As of October 2017  this issue is now resolved in    jdk1 9  jdk1 8 152 jdk1 7 161

[java] Class JavaLaunchHelper is implemented in both ... libinstrument.dylib. One of the two will be used. Which one is undefined

July 2019

custom IntelliJ IDEA properties

Examples related to java

Examples related to eclipse

Examples related to macos

Examples related to jvm

Examples related to jvm-hotspot