Java

15) For the ReadWords class that is used to read the content of a given text file, which of the following represent a valid no-arguments constructor definition?

Select one:

a.

public void ReadWords() throws FileNotFoundException { . . . }

b.

None of these

c.

public ArrayList ReadWords() throws FileNotFoundException { . . . }

d.

public ReadWords() throws FileNotFoundException { . . . }

In the following code:

public void displayAddress(Address add) {

System.out.println(add.toString());

}

17) add is an object in memory that belongs to Address class.

Select one:

True

False

19) If a class supplies at least one constructor but does not supply a no-argument constructor, it is illegal to construct objects without supplying arguments.

Select one:

True

False

23)

Abstract classes can not be instantiated.

Select one:

True

False