throws

One way to handle a checked exception is to add a throws to the end of your method declaration.

int divide(int x, int y) throws Exception {
    if (y == 0) {
        throw new Exception();
    }

    return x / y;
}

void main() {
    
}

This will make it so that calling code needs to check for the possibility of that exception being thrown.

int divide(int x, int y) throws Exception {
    if (y == 0) {
        throw new Exception();
    }

    return x / y;
}

void doStuff() {
    divide(1, 0);
}

void main() {
    
}

You can also declare unchecked exceptions using throws but you are never required to.¹

int divide(int x, int y) throws RuntimeException {
    if (y == 0) {
        throw new RuntimeException();
    }

    return x / y;
}

void main() {
    
}