Minecraft Java Alpha 1.0.16_02 " is a real historical version of the game, there is no official "APK" version of it, as APKs are specific to Android devices and this version was built exclusively for Java Edition Minecraft Wiki The History of Alpha v1.0.16_02 Released on August 13, 2010
Java Edition Alpha v1.0.16_02 is a historical PC version released on August 13, 2010, primarily to fix a critical bug related to player and mob deaths. Despite various online claims, an "exclusive APK" for this specific version does not exist officially, as APK files are for Android (Bedrock/Pocket Edition) and this version was built exclusively for Java-supported desktop environments. Minecraft Wiki Historical Significance and Features minecraft java alpha 10 1602 download exclusive apk
Why Download?
What you can do if you want to play old Java Alpha versions legally: Minecraft Java Alpha 1