Gradle finds wrong JAVA HOME even though it s correctly set

Question

When trying to run gradle  I get the following error     gradle  ERROR  JAVA HOME is set to an invalid directory   usr lib jvm default-java  Please set the JAVA HOME variable in your environment to match the location of your Java installation    However  when I check the JAVA HOME variable I get     echo  JAVA HOME   usr lib jvm java-7-oracle   My JAVA HOME is defined in  bashrc and I have double checked that it is set as the source   Running java -version also confirms that JAVA HOME is set correctly and is on the PATH     java -version java version  1 7 0 51  Java TM  SE Runtime Environment  build 1 7 0 51-b13  Java HotSpot TM  64-Bit Server VM  build 24 51-b03  mixed mode    I have also checked that  usr bin java symlinks to  etc alternatives java which in turn correctly symlinks to  usr lib jvm java-7-oracle jre bin java  Additionally I ve checked that there are no duplicate JAVA HOME definitions in  bash profile or  etc profile    So my question is how why does Gradle find  usr lib jvm default-java  and more importantly how do I point it to the correct directory    Other programs which require the JDK work fine  so I think its a Gradle issue  I ve also tried reinstalling Gradle which made no difference   I m running 64bit Xubuntu  Ubuntu 13 10 base

User · Answer

sudo ln -s  usr lib jvm java-7-oracle jre  usr lib jvm default-java   Create a symbolic link to the default-java directory   You can find your java directory by  readlink -f   which java     outputs   usr lib jvm java-7-oracle jre bin java   Remove the last   bin java  and use it in above symbolic link command

User · Answer

Turns out that the particular Gradle binary I downloaded from the Ubuntu 13 10 repository itself tries to export JAVA HOME  Thanks to Lucas for suggesting this    usr bin gradle line 70   export JAVA HOME  usr lib jvm default-java   Commenting this line out solves the problem  and Gradle finds the correct path to the Java binary    If you just download the binary from their website it does not have this problem   It s an issue with the Ubuntu repo version  There also seem to be some other issues with 13 10 version

User · Answer

You can also go to the bin folder inside your gradle installation folder and correct the JAVA HOME parameter in gradle bat file  In my case  my JAVA HOME was set to c  Program files java bin The JAVA HOME in gradle bat was set to  JAVA HOME  bin java exe   I corrected the JAVA HOME in gradle bat and it worked   Thank you

User · Answer

Try installing latest version of gradle   sudo add-apt-repository ppa cwchien gradle  sudo apt-get update  sudo apt-get install gradle   If we install from ubuntu repo  it will install the old version    for me it was gradle 1 4   In older version  it sets java home from gradle as export JAVA HOME  usr lib jvm default-java  Latest version don t have this issue

User · Answer

Adding below lines in build gradle solved my issue    sourceCompatibility   JavaVersion VERSION 1 8 targetCompatibility   JavaVersion VERSION 1 8

User · Answer

I had a problem with this too  It said wrong directory when it was correct  So I just created a local variable with the name of JAVA HOME omitting the final  bin java  It worked fine for me

User · Answer

Windows  As already said  it looks like  bat -file tries to find java exe from  JAVA HOME  bin java exe so it doesn t find it since bin is repeated twice in path  Remov that extra  bin from gradle bat

User · Answer

For me an explicit set on the arguments section of the external tools configuration in Eclipse was the problem

User · Answer

Solution is to make JAVA HOME    dir above bin where javac lives as in   type javac  javac is  usr bin javac     now check if its just a symlink  ls -la  usr bin javac    usr bin javac - gt   etc alternatives javac     its a symlink so check again  ls -la  etc alternatives javac    now check if its just a symlink   etc alternatives javac - gt   usr lib jvm java-8-openjdk-amd64 bin javac   OK so finally found the bin above actual javac so do this  export JAVA HOME  usr lib jvm java-8-openjdk-amd64 export PATH  JAVA HOME bin  PATH   above can be simplified and generalized to  which javac  gt  dev null 2 gt  amp 1    die  ERROR  no  javac  command could be found in your PATH  export JAVA HOME   dirname   dirname   readlink -f   which javac

User · Answer

If your GRADLE HOME and JAVA HOME environment are set properly then check your JDK directory and make sure you have java exe file under below path   C  Program Files  x86  Java jdk1 8 0 181 bin   As error mentioned in gradle bat file   findJavaFromJavaHome set JAVA HOME  JAVA HOME     set JAVA EXE  JAVA HOME  bin java exe  if exist   JAVA EXE   goto init  echo  echo ERROR  JAVA HOME is set to an invalid directory   JAVA HOME  echo  echo Please set the JAVA HOME variable in your environment to match the echo location of your Java installation    It is not able to locate your java installation  So find and set      java exe   under  JAVA HOME  bin if everything is correct   This works for me  my account got disabled by client and their admin has removed java exe from my directory

User · Answer

For me this error was due to the reason Gradle as installed as sudo and I was trying as default user to run Gradle   Try   sudo gradle -version   or  sudo gradle -v

User · Answer

Did you export your JAVA HOME   Without export  the setting will not be propagated to the commands started inside of that shell   Also  java -version does not use JAVA HOME  rather it uses the first java found in your path   Make sure your  bashrc looks something like this   JAVA HOME  path to java home export JAVA HOME

User · Answer

I have tested this on Manjaro Linux  Should work on other Disto too  You need to include whole java-jdk dir instead of just java bin for java env var  For example  instead of  export JAVA HOME  opt jdk-14 0 2 bin  change path according to your jdk location PATH  PATH  JAVA HOME use this  export JAVA HOME  opt jdk-14 0 2      change path according to your jdk location PATH  PATH  JAVA HOME then run the gradle command it will work

User · Answer

Before running the command try entering   export JAVA HOME  path to java home    Where path to java home is the folder where your bin java is   If java is properly installed you can find it s location  by using the command   readlink -f   which java    Don t forget to remove bin java from the end of the path while putting it into JAVA HOME

User · Answer

In my Ubuntu  I have a headache for 2 days on this issue   Step 1  Type on the terminal whereis java then it will display something like this  java   usr bin java  etc java  usr share java  usr lib jvm java-8-openjdk-amd64 bin java  usr share man man1 java 1 gz   Step 2  Take note of the path     usr lib jvm java-8-openjdk-amd64 bin java  exclude the bin java  your JAVA HOME    usr lib jvm java-8-openjdk-amd64

User · Answer

add a symbolic link   sudo ln -s  usr lib jvm java-7-oracle  usr lib jvm default-java

User · Answer

I had the same problem  but I didnt find export command in line 70 in gradle file for the latest version 2 13  but I understand a silly mistake there  that is following    If you don t find line 70 with export command in gradle file in your gradle folder bin    then check your    bashrc  if you find  export JAVA HOME   usr lib jvm java-7-openjdk-amd64 bin java  then remove  bin java from this line  like JAVA HOME   usr lib jvm java-7-openjdk-amd64  and it in path    instead of this export PATH  PATH  HOME bin JAVA HOME   it will be export PATH  PATH  HOME bin JAVA HOME bin java  Then run source    bashrc   The reason is  if you check your gradle file  you will find in line 70  if there s no export command  or in line 75    JAVACMD   JAVA HOME bin java      fi     if     -x   JAVACMD      then         die  ERROR  JAVA HOME is set to an invalid directory   JAVA HOME       That means   bin java is already there  so it needs to be substracted from JAVA HOME path    That happened in my case

User · Answer

I faced this issue when I run the following command on Ubuntu   ionic build android   To solve this issue  I did the following steps   ln -sf  usr lib jvm java-7-openjdk-amd64 jre bin java  usr lib jvm default-java   Add JAVA HOME to  etc environment   vi  etc environment   Add   JAVA HOME   usr lib jvm default-java    After saving  read it   source  etc environment   Finally  you can run build command

User · Answer

In my dockercontainer  being minimal the problem of not finding java  was  that  which  was not installed  Comipling a project using gradlew used which in   gradlew to find java Installing which solved the problem

[java] Gradle finds wrong JAVA_HOME even though it's correctly set

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