Nativescript-cli: [OpenJDK] tns platform add android: Error executing command 'javac'.

[daxim]

Following the tutorial, step 1-3:

~/hack/nativescript/sample-Groceries$ tns platform add android
Error executing command 'javac'. Make sure you have installed The Java Development Kit (JDK) and set JAVA_HOME environment variable.
~/hack/nativescript/sample-Groceries$ echo $JAVA_HOME
/usr/lib64/jvm/java
~/hack/nativescript/sample-Groceries$ javac
Usage: javac <options> <source files>
where possible options include:
  @<filename>                  Read options and filenames from file
  -Akey[=value]                Options to pass to annotation processors
  --add-modules <module>(,<module>)*
        Root modules to resolve in addition to the initial modules, or all modules
        on the module path if <module> is ALL-MODULE-PATH.
  --boot-class-path <path>, -bootclasspath <path>
        Override location of bootstrap class files
  --class-path <path>, -classpath <path>, -cp <path>
        Specify where to find user class files and annotation processors
  -d <directory>               Specify where to place generated class files
  -deprecation
        Output source locations where deprecated APIs are used
  -encoding <encoding>         Specify character encoding used by source files
  -endorseddirs <dirs>         Override location of endorsed standards path
  -extdirs <dirs>              Override location of installed extensions
  -g                           Generate all debugging info
  -g:{[lines, vars, source],[lines, vars, source],[lines, vars, source]}
        Generate only some debugging info
  -g:none                      Generate no debugging info
  -h <directory>
        Specify where to place generated native header files
  --help, -help                Print a synopsis of standard options
  -implicit:{[none, class],[none, class]}
        Specify whether or not to generate class files for implicitly referenced files
  -J<flag>                     Pass <flag> directly to the runtime system
  --limit-modules <module>(,<module>)*
        Limit the universe of observable modules
  --module <module-name>, -m <module-name>
        Compile only the specified module, check timestamps
  --module-path <path>, -p <path>
        Specify where to find application modules
  --module-source-path <module-source-path>
        Specify where to find input source files for multiple modules
  -nowarn                      Generate no warnings
  -parameters
        Generate metadata for reflection on method parameters
  -proc:{[none, only],[none, only]}
        Control whether annotation processing and/or compilation is done.
  -processor <class1>[,<class2>,<class3>...]
        Names of the annotation processors to run; bypasses default discovery process
  --processor-module-path <path>
        Specify a module path where to find annotation processors
  --processor-path <path>, -processorpath <path>
        Specify where to find annotation processors
  -profile <profile>
        Check that API used is available in the specified profile
  --release <release>
        Compile for a specific VM version. Supported targets: 6, 7, 8, 9
  -s <directory>               Specify where to place generated source files
  -source <release>
        Provide source compatibility with specified release
  --source-path <path>, -sourcepath <path>
        Specify where to find input source files
  --system <jdk>|none          Override location of system modules
  -target <release>            Generate class files for specific VM version
  --upgrade-module-path <path>
        Override location of upgradeable modules
  -verbose                     Output messages about what the compiler is doing
  -version                     Version information
  -Werror                      Terminate compilation if warnings occur
  -X                           Print a synopsis of nonstandard options

The message from the tns platform command is useless because it does not say what the error is.

[PanayotCankov]

Have you exported the $JAVA_HOME? It must be visible to the child process.

[daxim]

The variable is already set at an earlier time. Of course it will be part of the environment of child processes spawned from the shell:

$ echo $JAVA_HOME
/usr/lib64/jvm/java
$ perl -E'say $ENV{JAVA_HOME}'
/usr/lib64/jvm/java
$ node -p process.env.JAVA_HOME
/usr/lib64/jvm/java

Why is this tagged as question? I am not asking a question, I am reporting a bug. Why do you close the ticket before it's resolved? Kindly reopen.

[daxim]

↑ @PanayotCankov ↑

[kristoftorfs]

Having the same issue here. Everything is configured as it should be, but I keep getting the error, no matter which tns command I try.

[kristoftorfs]

@daxim My problem when away after setting the OpenJDK v8.

sudo update-alternatives --config java
sudo update-alternatives --config javac

[alextfos]

I have the same problem. Any solution?

[pkoleva]

Hey guys, sorry for the late reaction. Do you still have this issue? @alextfos @kristoftorfs @daxim

[petekanev]

@cdarken ☝️

[aep]

is this safe to ignore? since android studio works fine for me despite this warning. message _what_ that error was when executing javac would be nice

[dtopuzov]

Hi @aep

Can you elaborate a bit more on is this safe to ignore?
Do you see some errors now, what are the steps to reproduce them?

[dtopuzov]

Closing due to inactivity.

[aep]

yep, still getting the message, but everything works fine.

$ javac -version 
javac 1.8.0_141

[dtopuzov]

Hi @aep

Is your java OpenJDK or it is Oracle's JDK?

Did you try this solution?

[aep]

@dtopuzov openjdk.
i dont use ubuntu. so no.
also i cant really reproduce this anymore, after a system update, sorry.
maybe it's already fixed in the meantime?

[dtopuzov]

Thanks, for the info, it looks like we have this issue only with OpenJDK (we recommend Oracle's JDK).

[pablo-novoa]

I'm having the same problem. I'm using Oracle's JDK, JAVA_HOME is in the PATH, android studios works OK and also the emulator.

But tns run android do not work, it say:

"Error executing command 'javac'. Make sure you have installed The Java Development Kit (JDK) and set JAVA_HOME environment variable."

Please, fix this

[cristoferfb]

I have the same problem I use javac in my terminal fine but the script say "Error executing command 'javac'. Make sure you have installed The Java Development Kit (JDK) and set JAVA_HOME environment variable." when "Verifying CocoaPods. This may take some time, please be patient.."

[Spatlani]

+1

[mnovak20]

same issue here on a mac

[mnovak20]

ok I've been dealing with this since yesterday and the issue finally went away.

I had jdk-9 and jdk-8 so I removed both using the commands in this stackoverflow thread
https://stackoverflow.com/questions/19039752/removing-java-8-jdk-from-mac

Then reinstalled jdk-8u144-macosx-x64.dmg after restarting.
Once that was done, I ran tns doctor but it complained about android sdks so I added the ANDROID_HOME variable path again.
After that, I ran tns doctor one more time and the javac error went away.

Hopefully this helps someone.

[sainsley123]

@mnovak20 is there a reason why you chose that version of the JDK and not JDK 9?

[sainsley123]

So, still not working.
Nativscript version: 3.2.1
Javac version: 9
Java version: 9
ANDROID_HOME: /Users/username/Library/Android/sdk
JAVA_HOME: /Library/Java/JavaVirtualMachines/jdk-9.jdk/Contents/Home

When I run tns run android --emulator I get

Error executing command 'javac'. Make sure you have installed The Java Development Kit (JDK) and set JAVA_HOME environment variable.

I tried @mnovak20 solution and no luck.

[mnovak20]

I originally started with 9, that didn't work so I installed 8, that still didn't work.
At that point I had 2 JDKs so I uninstalled both and installed 8 again.
That's when tns doctor stopped throwing errors.

It may work fine with JDK9 but it just didn't for me.

[Spatlani]

Same goes for me, I was using java-9-openjdk and it was showing the same error, I then installed java-8-oracle (according to the documentation) and that fixed it.

[sainsley123]

@Spatlani and @mnovak20 that did it. I used jdk-8u144 and reset the JAVA_HOME variable. Thanks all!

[jon301]

Hi
Same here, it does not seem to work with the latest version of the JDK (jdk-9.0.1)

[MarkPieszak]

A couple of tips for people running into this (at least for MAC some of these worked).
Make sure your using JDK 8, - 9 doesn't work (the docs have been updated recently to reflect that).

Next, if you're getting the JAVA_HOME issues (even though you exported them at some other time), update your bash_profile

nano .bash_profile

// in the file add
export JAVA_HOME=$(/usr/libexec/java_home)
export ANDROID_HOME=/usr/local/share/android-sdk

// then save and exit
ctrl+o  (then Y for yes)
ctrl+x

Hope that helps others, got me able to get through tns doctor.

[Bardolos]

You shouldn't need to remove and reinstall JDK versions.

Run javac -version to see which version is being exported. For instance, this will return:

$ javac -version
javac 9.0.1

Use this command to check currently installed versions:
$ /usr/libexec/java_home -V

It will show you something like:

$ /usr/libexec/java_home -V
Matching Java Virtual Machines (2):
    9.0.1, x86_64:  "Java SE 9.0.1" /Library/Java/JavaVirtualMachines/jdk-9.0.1.jdk/Contents/Home
    1.8.0_131, x86_64:  "Java SE 8" /Library/Java/JavaVirtualMachines/jdk1.8.0_131.jdk/Contents/Home

If you have multiple versions you can select the desired $JAVA_HOME export like so:

export JAVA_HOME=$(/usr/libexec/java_home -v 1.8)

(if you have multiple versions of 1.8 for instance you should specify the entire version number: 1.8.0_131. If it's unique, 1.8 will do.)

Add that export to ~/.bash_profile to make it default and restart the terminal.

Output of javac -version is now:

$ javac -version
javac 1.8.0_131

Running tns doctor should not show javac error anymore. Hope it helps.

[seohangyu]

delete all java version and install java 8. I solved.

[ahmadmarafa]

i sloved this problem by fixing my .bash_rc JAVA_HOME
i used this line
export JAVA_HOME=ls -d /usr/lib/jvm/java--openjdk-/ | head -n 1

[Ihor912]

I fixed the same issue with:
export JAVA_HOME=$(/usr/libexec/java_home)

[rosen-vladimirov]

Hey guys,
We have added a check for Java 9 and latest CLI reports it is not supported. I see some of you had issues with setting JAVA_HOME, but after fixing the variable, everything works fine. Can we consider the issue as resolved or you have some suggestions how to improve the checks of tns doctor?

[sainsley123]

I would agree that this should be closed. I resolved this by setting my JAVA_HOME to version 1.8. After reinstalling it of course. :)

[daxim]

you have some suggestions how to improve the checks of tns doctor?

@rosen-vladimirov, start by not throwing away the error message. It's more than a year later, Java 8, 9, 10 and 11 came out and passed you by.

[d-pollard]

Ubuntu 16.04 Fix

Modification to @MarkPieszak 's comment: https://github.com/NativeScript/nativescript-cli/issues/2265#issuecomment-340232515

vim ~/.profile

Then, at the bottom of the file use i to insert the following:

export ANDROID_HOME=$HOME/Android/Sdk
export PATH=$PATH:$ANDROID_HOME/tools
export JAVA_HOME=$(/usr/lib/jvm/{your_java_version}/bin)
export PATH=$PATH:$JAVA_HOME

Then, save (ctrl+x) and either run the following command:

source ~/.profile

OR restart your terminal.

Hope this helps!

[rosen-vladimirov]

Hey all,

Regarding the support for Java 10, we've created a new issue, you can follow it here: https://github.com/NativeScript/nativescript-cli/issues/3605 (Note - it is planned for the 4.1.0 release)

I'm closing this thread as the initial issue has been resolved.

[miki995]

Yeap, just run this http://i.imgur.com/ytUsVX5.png from https://docs.nativescript.org/angular/start/ns-setup-linux for linux, for windows and macOS please take a look on docs.

[LucaColombi]

Solved this under ubuntu 18.

I had multiple JDK installation

the problem is setting JAVA_HOME with generated dynamic values, for instance:

export JAVA_HOME=$(readlink -f /usr/bin/java | sed "s:bin/java::")
export JAVA_HOME=$(/usr/libexec/java_home)

worked in terminal, but produce the error in tns

when I used a static complete path, it worked:
export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-amd64

probably these dynamics values change their values under tns and use another version of the JVM