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I was just looking at the build instructions page for AOSP and noticed a significant change that must've just happened in the last week or so. Apparently Java 7 is now required, and Google officially recommends using OpenJDK. Under where it says "To develop for older versions..." it lists Java 6 next to KitKat, meaning this is apparently for code newer than KitKat. I don't think OpenJDK was compatible before, so that plus the move to Java 7 seems noteworthy. Can anybody who watches AOSP commits comment on when this change occurred? Is this signifying a non-minor update is coming after KitKat?

For reference, here is the relevant text of the current page at

Installing the JDK

The latest version of Android in the Android Open Source Project (AOSP) requires Java 7. On Ubuntu, use OpenJDK.

Java 7: For the latest version of Android

$ sudo apt-get update
$ sudo apt-get install openjdk-7-jdk
Optionally, update the default Java version by running:

$ sudo update-alternatives --config java
$ sudo update-alternatives --config javac
To develop older versions of Android, download and install the corresponding version of the Java JDK:
Java 6: for Gingerbread through KitKat
Java 5: for Cupcake through Froyo
And this is what it said on Feb. 16 according to Wayback Machine:

Installing the JDK

The Sun JDK is no longer in Ubuntu's main package repository. In order to download it, you need to add the appropriate repository and indicate to the system which JDK should be used.

Java 6: for Gingerbread and newer

$ sudo add-apt-repository "deb lucid partner"
$ sudo apt-get update
$ sudo apt-get install sun-java6-jdk
Java 5: for Froyo and older

$ sudo add-apt-repository "deb hardy main multiverse"
$ sudo add-apt-repository "deb hardy-updates main multiverse"
$ sudo apt-get update
$ sudo apt-get install sun-java5-jdk
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