Final answer:
Hominins reached the island of Java by 1.6 million years ago, with Homo erectus likely traveling via land bridges during lower sea levels in the Pleistocene Ice Age.
Step-by-step explanation:
Eventually, hominins made it all the way to the island of Java by 1.6 million years ago (mya). These hominins, likely Homo erectus, migrated out of Africa and into Eurasia, eventually reaching Southeast Asia and islands such as Java, which is now part of Indonesia. The journey to Java likely involved land bridges that appeared due to lower sea levels during the Pleistocene Ice Age, which allowed for migration through interior coastal routes.
They likely traveled there by a land route during the Pleistocene Ice Age when seas were lower and allowed for more passage through interior coastal routes. This migration demonstrates the early dispersal of hominins to diverse environments and their ability to adapt to new conditions.