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Accepted
Amul Bhatia
Asked: 2014-07-07 03:07:01 +0800 CST

Android Studio not working - tools.jar classpath error

  • 772

I have just downloaded the Android Studio and when I try to run ./studio.sh it gives me an error of

'tools.jar' seems to be not in Android Studio classpath. Please ensure JAVA_HOME points to JDK rather than JRE

I have checked /usr/lib/jvm/java-1.7.0-openjdk-amd64 this folder java is there and I have set the environment variables in 

/etc/environment

as

JAVA_HOME="/usr/lib/jvm/java-1.7.0-openjdk-amd64/"

but still, the same error is coming, Please help me out,

after saving this file, if I check

echo $JAVA_HOME

nothing comes and when I try 

source /etc/environment

it comes as

JAVA_HOME: command not found

How should I proceed?

java

4 Answers

  1. Best Answer

    I got the same error when trying to run the android-studio beta installation. I tried various options, but the one that worked for me was: 

    sudo apt-get install openjdk-7-jdk

    Didn't have to do anything else.

    But, I am surprised that 

    java -version

    listed the same 3 lines before and after the jdk install: 

    java version "1.7.0_55"  
OpenJDK Runtime Environment (IcedTea 2.4.7) (7u55-2.4.7-1ubuntu1~0.13.10.1)  
OpenJDK 64-Bit Server VM (build 24.51-b03, mixed mode)

    and

    echo $JAVA_HOME

    outputs blanks, but now the android-studio is running.

    • 9

  2. Check the most liked answer. If java is already installed and want to change the priority then

    update-alternatives --config java
    • 2

  3. For me there was a problem with some certificates (seems to be a java bug).
    I fixed it with the following (reference):

    $ sudo dpkg --purge --force-depends ca-certificates-java
$ sudo apt-get install ca-certificates-java
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  4. I had a similar problem and I performed:

    sudo apt-get install oracle-java8-set-default

    Hope it helps!

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