Does a federal judge have jurisdiction to dismiss a state law claim against a defendant in a civil case?

^2. Though Plaintiffs maintain that the district court improperly dismissed their state law claims with prejudice, the district court's order belies this contention, as the court expressly declined to exercise supplemental jurisdiction over those claims. See van Emrik v. Chemung Cty. Dep't of Soc. Servs., 911 F.2d 863, 868 (2d Cir. 1990) ("Having rejected appellants' constitutional claims, [the district court] properly declined to exercise pendent jurisdiction over their state law claims, in effect, dismissing them without prejudice.").