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Question 31

Given these class definitions:

Which class or classes compile?

    Correct Answer: C

    All provided class definitions will compile without errors. In Java, all classes implicitly extend the Object class if no other superclass is specified. Therefore, MyClassA, MyClassB, MyClassC, and MyClassD will all compile correctly. MyClassB is public, which is allowed, and MyClassD contains a valid main method as the entry point for a Java application. Additionally, MyClassC explicitly extends Object, which is a valid syntax, but it would implicitly extend Object even if not specified. Therefore, the correct answer is that MyClassA, MyClassB, MyClassC, and MyClassD all compile.

Discussion
CuriosityYenOption: C

MyClassA: This class will compile without any issues. MyClassB: This class will also compile without any issues. MyClassC: This class will compile without any issues. It extends the Object class implicitly, as all classes in Java are subclasses of Object by default. MyClassD: This class will compile without any issues as well. It contains the main method, which serves as the entry point for the Java application.

darius123Option: C

All classes are defined correctly

Yousef10Option: C

All classes are correct , no issues with them , Correct Answer is C

SKHULU

@CuriosityYen True that!!!!

arjunec1Option: A

Option A is correct, since MyClassC will also compile - as it extends the Class Object the syntax valid.

arjunec1Option: A

Option A is correct, since MyClassC will also compile - as it extends the Class Object the syntax valid.