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 J

Answer 1

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.

Answer 2

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

Answer 3

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

_{note: however I would suggest you to figure out why it doesn't work on 1.8}

Answer 4

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.

Answer 5

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.

Answer 6

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