javac invalid target release 1 8

Question

I recently downloaded JDK 1 8 0 0 06 that comes bundled with NetBeans  I then got to find out that my JavaFx project  that I have been developing in Java 1 7 won t compile in Java 1 8  and so I stepped down my JDK to 1 7  Still I can t get it to work  compile  I get this error   javac  invalid target release  1 8 Usage  javac  lt options gt   lt source files gt    I m really stuck and would greatly appreciate any help

User · Answer

For IntelliJ IDEA Ultimate latest version as of 18th Dec 2017  if the above suggestions don t work  then please try the following  Right Click on the project and navigate to  Open Module Settings   Open it  then change the  Language Level  from the dropdown

User · Answer

Your javac is not pointing to correct java   Check where your javac is pointing using following command -  update-alternatives --config javac   If it is not pointed to the javac you want to compile with  point it to   JAVA8 HOME bin javac   or which ever java you want to compile with

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Alternatively  I checked the pom xml and  changed    lt java version gt 1 8 lt  java version gt    to    lt java version gt 1 7 lt  java version gt

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Download JDK 8  Edit your env var for JAVA HOME to point to the new installed JDK 1 8  R-click on My Computer -  Properties -  Advanced System Settings -  Environment Variables find JAVA HOME on the list and set it s value to something like that   C  Program Files Java jdk1 8 0 31  Find the old version and edit it in PATH variable aswell  Probably you will need to restart the system    Should be done

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Most of the time  these type of issues happen due to incorrect java version  Make sure your PATH and JAVA HOME variables are pointing to the correct version

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Maven setting    lt properties gt       lt maven compiler source gt 1 8 lt  maven compiler source gt       lt maven compiler target gt 1 8 lt  maven compiler target gt   lt  properties gt

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If this error occurs when running a Gradle  or Maven  task  you need to modify that build tool configuration to point to your installation of Java JDK 1 8 following this route   File -  Settings -  Build  Execution  Deployment -  Build Tools -  Gradle  There you check the Linked Gradle project is the one you are working on and select the Gradle JVM  You missed this when you imported the gradle project into IntelliJ     Remember when importing a Gradle  or Maven  project to set the target JVM correctly here

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I got the same issue in  IntelliJ IDEA Community with Maven and I had to reimport the project by right-clicking the project in the Project tab -  Maven -  Reimport

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Installing a newer release of IDEA Community  2018 3 instead of 2017 x  was solved my issue with same error but java version 11  Reimport hadn t worked for me  But it worth a try

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if you are going to step down  then change your project s source to   1 7 as well       right click on your Project -  Properties -  Sources window  and set   1 7 here  Jigar Joshi   Also go to the build-impl xml and look for the property excludeFromCopy    copylibs excludes   and delete this property on my code was at line 827 but I ve seen it on other lines  for me was taking a code from MAC OS java 1 8 to WIN XP java 1 7

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I got the same issue with netbeans  but mvn build is OK in cmd window  For me the issue resolved after changing netbeans  JDK  in netbeans conf as below        netbeans jdkhome  C  Program Files Java jdk1 8 0 91      Edit  Seems it s mentioned here  netbeans bug 236364

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Just do this  Then invalidate IntelliJ caches  File - gt  Invalidate Caches

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if you are going to step down  then change your project s source to 1 7 as well    right click on your Project - gt  Properties - gt  Sources window    and set 1 7 here  note  however I would suggest you to figure out why it doesn t work on 1 8

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None of the previous solutions worked for me   I solved it by editing  idea compiler xml There were  extra   1  and  2  copies of the bad module with different targets   I deleted the extraneous entried and changed the targets in the  section to 1 8 and it worked

User · Answer

For IntelliJ14 you may have to change the bytecode version w r t  the JDK you are using  in the global settings

[java] javac: invalid target release: 1.8

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