Oracle calls dibs on the Java APIs, even if Java itself is open. If the court agrees, it'll be bad news for developers everywhere.

Google is replacing its implementation of the Java application programming interfaces (APIs) in Android with OpenJDK, the open source version of Oracle’s Java Development Kit (JDK).

Android will be using OpenJDK, an open source-licensed version of Java SE that has been in development since 2007 (before Oracle bought Sun Microsystems and became the de facto owner of Java).

Microsoft highlights historical tech innovations, including the Windows Subsystem for Linux, that were enabled in the same way Google used Java APIs.

After a long legal battle, Google is moving to a completely open implementation of Java in Android N.