Fallthrough

If the code for a given label does not have a break then it will "fall through" to the cases below.

This is what makes C-style switches strange. It can occasionaly be useful if the same code should run for some or all cases, but is annoyingly easy to do on accident.¹

class Main {
    void sayWhoTheyFought(String name) {
        switch (name) {
            case "Goku":
                System.out.println("Fought Pilaf");
                System.out.println("Fought The Red Ribbon Army");
            case "Gohan": // "Goku" will fall through to this case
                System.out.println("Fought Frieza");
                System.out.println("Fought Cell");
                System.out.println("Fought Majin Buu");
        }
    }
    
    void main() {
        sayWhoTheyFought("Gohan");
        System.out.println("----------------------");
        sayWhoTheyFought("Goku");
    }
}