The official language for Android development is Java. Large parts of Android are written in Java and its APIs are designed to be called primarily from Java. It is possible to develop C and C++ app using the Android Native Development Kit (NDK), however it isn’t something that Google promotes.

Is Android still based on Java?

Current versions of Android use the latest Java language and its libraries (but not full graphical user interface (GUI) frameworks), not the Apache Harmony Java implementation, that older versions used. Java 8 source code that works in latest version of Android, can be made to work in older versions of Android.

Is Android based on Linux or Java?

Yes, android is based on Linux but that doesn’t mean you cannot run Java applications on Linux systems. Just like Linux android is also an operating system much as Windows is based on unix( or atleast was ). Android provides a virtual machine for Java applications so the code is compiled and not interpreted.