https://groups.google.com/forum/#!topic/app-inventor-open-source-dev/HvXO1wTGMNI
Oracle JDKをインストール
http://qiita.com/u_one/items/a95e8138bc46b6b153ce
# apt-get update # apt-get install oracle-java7-jdk
javaを変更
http://askubuntu.com/questions/315646/update-java-alternatives-vs-update-alternatives-config-java/388693
sudo update-alternatives --config java
https://github.com/mit-cml/appinventor-sources
You will need a full Java JDK (6 or 7, preferably from Oracle; JRE is not enough) and Python to compile and run the servers.