Java casting resulting in run-time error instead of compilation error

Question

The following code snippet will result in a run-time:

class Vehicle {
    public void printSound() {
        System.out.print(\"vehicle\");
    }
}

class Ca         


        

Answer 1

This is a runtime error because you already defined the variable v as a Car. You cannot convert Car to Bike.

The compiler will not check this kind of value assignment because compilers in general do not check semantics.