M1 MBP.

At the lower tier with the 8GB RAM, it's the most affordable device that will outlast power cuts that are frequent where I am - cheaper than getting a backup power solution. Getting more RAM is a ridiculous cash grab by Apple.

It's a rock and a hard place.

>4GB RAM is very little usage for advanced IDE

Java is awful with RAM in general. Decent text editor plugin setups can get close to the Jetbrains suite for what I do, but it's just a few small UX & plugin papercuts that make the difference. And I heavily doubt that those tools I prefer are that heavy compared to other editors.