Java Problems

[Jörg Giese]

I try to run the make comman and i get the following error

============================================

Checking build tools versions...

************************************************************

You are attempting to build with the incorrect version

of java.

 

Your version is: Picked up JAVA_TOOL_OPTIONS: -javaagent:/usr/share/java/jayatanaag.jar  java version "1.7.0_80" Java(TM) SE Runtime Environment (build 1.7.0_80-b15) Java HotSpot(TM) 64-Bit Server VM (build 24.80-b11, mixed mode).

The required version is: "1.7.x"

 

Please follow the machine setup instructions at

    https://source.android.com/source/initializing.html

************************************************************

java -version

Picked up JAVA_TOOL_OPTIONS: -javaagent:/usr/share/java/jayatanaag.jar 

java version "1.7.0_80"

Java(TM) SE Runtime Environment (build 1.7.0_80-b15)

Java HotSpot(TM) 64-Bit Server VM (build 24.80-b11, mixed mode)

What did I wrong?

[Dave Smith]

The Makefile parses the output of 'java -version' and scrapes for the version number. It is having trouble parsing the output because your command returns a strange value based on your JAVA_TOOL_OPTIONS setting.

First step to try would be to set your JAVA_HOME to the root directory of your selected JDK. This will take precedence over the JAVA_TOOL_OPTIONS it is currently picking up.

On many host systems (e.g. Ubuntu), building the latest version actually requires OpenJDK (rather than Oracle). You might try that also.

Dave Smith, PE
@devunwired

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[Jörg Giese]

I have tried with OpenJDK too,

But i get the same error-message:

============================================
Checking build tools versions...
************************************************************
You are attempting to build with the incorrect version
of java.
 

Your version is: Picked up JAVA_TOOL_OPTIONS: -javaagent:/usr/share/java/jayatanaag.jar  java version "1.7.0_79" OpenJDK Runtime Environment (IcedTea 2.5.5) (7u79-2.5.5-0ubuntu1) OpenJDK 64-Bit Server VM (build 24.79-b02, mixed mode).

The required version is: "1.7.x"
 
Please follow the machine setup instructions at
    https://source.android.com/source/initializing.html
************************************************************

wintux@potheadz-vm:~/android-x86$ java -version

Picked up JAVA_TOOL_OPTIONS: -javaagent:/usr/share/java/jayatanaag.jar 

java version "1.7.0_79"
OpenJDK Runtime Environment (IcedTea 2.5.5) (7u79-2.5.5-0ubuntu1)
OpenJDK 64-Bit Server VM (build 24.79-b02, mixed mode)
wintux@potheadz-vm:~/android-x86$ sudo update-alternatives --config java
Es gibt 2 Auswahlmöglichkeiten für die Alternative java (welche /usr/bin/java bereitstellen).
  Auswahl      Pfad                                            Priorität Status
------------------------------------------------------------
  0            /usr/lib/jvm/java-7-oracle/jre/bin/java          1072      automatischer Modus
* 1            /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java   1071      manueller Modus
  2            /usr/lib/jvm/java-7-oracle/jre/bin/java          1072      manueller Modus
Drücken Sie die Eingabetaste, um die aktuelle Wahl[*] beizubehalten,
oder geben Sie die Auswahlnummer ein: 

First step to try would be to set your JAVA_HOME to the root directory of your selected JDK. This will take precedence over the JAVA_TOOL_OPTIONS it is currently picking up.

How can change JAVA_HOME?

[Dave Smith]

$ export JAVA_HOME = /path/to/jdk/directory

The path would be something like /usr/java/jdk1.7.0_79/bin/java, it's the directory where the java and javac binaries are found.

You could also try unsetting JAVA_TOOL_OPTIONS inside the build shell so the Ubuntu alternatives config gets picked up (i.e. what you are setting with update-alternatives):

$ unset JAVA_TOOL_OPTIONS

I believe this option gets set by Android Studio, so you may not be able to remove it permanently with bigger issues. On the 5.x branches, the build system runs the following command on the output of java -version to determine if you have a correct (1.7.x) version:

grep '^java .*[ "]1\.7[\. "$$]')

…and the following command on javac -version:

grep '[ "]1\.7[\. "$$]')

If either of these commands return empty, it throws the Wrong Java Version error. It's failing on your output because the string it's looking for (java version "1.7.0_79") is not at the beginning of the line.

--

Dave Smith, PE

@devunwired

[Sreedevi Jagannath]

Thanks @Dave Smith. I finally understood the error.