AOT is not by itself anything good/fancy. As others mentioned, java could be AOT compiled since ancient times. Graal is state of the art/interesting, because it uses a different compilation technique than usual, looking at the program to be compiled incorporated with the interpreter for that compilation - which result in superior results for AOT compilation, and in the case of a replacement of JIT compilers, it looks promising (but not yet surpassing Hotspot).

Android’s java is pretty terrible in comparison, just saying.