Which of the following statements creates a class that is extended from the JFrame class?
A) JFrame DerivedClass = new JFrame();
B) class JFrame DerivedClass;
C) JFrame(DerivedClass);
D) public class DerivedClass extends JFrame{}

Question

Quizplus · Accepted Answer

Option D is the correct choice because it creates a public class named DerivedClass that extends the JFrame class. This means that DerivedClass inherits all the properties and methods of the JFrame class and can be used to create graphical user interface components. Option A creates a new instance of the JFrame class and assigns it to a variable named DerivedClass, while option B attempts to declare a class name with a space in it, and option C does not make sense because it attempts to call a constructor for the JFrame class with a parameter that is undefined.

Which of the Following Statements Creates a Class That Is