Which statement is true?
A. This method is invalid.
B. This method can be used only in an interface.
C. This method can return anything.
D. This method can be used only in an interface or an abstract...
Which three are valid?
A. Pet a = new Dog();
B. Pet b = new Pet();
C. Dog f = new Pet();
D. Dog d = new Beagle();
E. Pet e = new Beagle();
F. Beagle c = new Dog();
Which code fragment must be inserted at line 6 to enable the code to compile?
A.
DBConfiguration f;
return f;
B. return DBConfiguration;
C. return new DBConfiguration();
D. retutn 0;