Which of the following class headers is correct? public abstract class Dalek ext

ID: 3723042 • Letter: W

Question

Which of the following class headers is correct?

public abstract class Dalek extends Robot implements Exterminate, Comparable<Dalek>

public class <abstract> Dalek extends Robot, implements Exterminate, Comparable

abstract public class Dalek extends Robot implements Exterminate, Comparable<Dalek>

public abstract class Dalek implements Exterminate, Comparable<Dalek> extends Robot

Which of the following class headers is correct?

Answers:

public abstract class Dalek extends Robot implements Exterminate, Comparable<Dalek>

public class <abstract> Dalek extends Robot, implements Exterminate, Comparable

abstract public class Dalek extends Robot implements Exterminate, Comparable<Dalek>

public abstract class Dalek implements Exterminate, Comparable<Dalek> extends Robot

In the option B: public class <abstract> Dalek extends Robot, implements Exterminate, Comparable

The syntax for writing the abstract is wrong in java for writing making a class abstract <> is not required. Which makes this option wrong.

In the option C: abstract public class Dalek extends Robot implements Exterminate, Comparable<Dalek>

Access modifier is used first but in this case, the abstract public which makes this option wrong.

In the option D: public abstract class Dalek implements Exterminate, Comparable<Dalek> extends Robot

In java a class is extended first then it is implemented but in this class header class Dalek in implemented first.

So the correct option is A:

public abstract class Dalek extends Robot implements Exterminate, Comparable<Dalek>

Access modifier is used correctly and class is extended first then it implements.

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