Hate to break it to you but I can already promise you that you've called it wrong, because that's not how international law works. Hamas is not a party to the genocide convention. There is no Palestinian state. The #ICJ cannot rule against Hamas, because they do not represent any sovereign authority recognized by international law; they control no borders, issue no visas, and thus cannot be charged in international criminal court. So you "calling" that ICJ will rule against Hamas is pure fanfic.
Even if there was a State of #Palestine that was party to the Genocide Convention prior to being occupied by #Israel, Palestinians are protected by Protocol I of the Geneva Conventions, which also denies Israel's right to attack the people they are occupying as "self-defense"