The "this" keyword refers to the implicit parameter inside your class.

True

False

To refer to a field $($agen$)$ in a class, we use this.age $($we assume that field is already declared in the class$)$

True

False

Which of the following are true? $($Choose all that apply$)$

this$()$ can be called from anywhere in a constructor.

this$()$ can be called from anywhere in an instance method.

this.variableName can be called from any instance method in the class.

this.variableName can be called from any static method in the class.

You can call the default constructor written by the compiler using this$().$

You can access a private constructor with the main$()$ method in the same class.

The subclass and superclass are also known as parent and child classes respectively.

True

False

We cannot have attributes and methods overridden$/$modified when using the modifier "final"

True

False

What is the output of the following program?

$01$: class Mammal $\{$

$02$: private void sneeze$()\{\}$

$03$: public Mammal $($int age$)\{$

$04$: $,$ System.out.print$("$Mammal$")$;

$05$: $\}\}$

public class Platypus extends Mammal $\{$

int sneeze $()\{$ return $1$;

public Platypus$()\{$

System.out.print$("$Platypus$")$;

$\}$

public static void main$($String $[]$ args$)\{$

new Mammal$(5)$;

$\}\}$

Platypus

Mammal

PlatypusMammal

MammalPlatypus

Platypus class inherits from Mammal class, so Platypus should have a constructor that pass in exact one integer argument

Platypus class inherits from Mammal class, so we must define an implicit super constructor Mammal between the line $8$ and $9.$ For example,

add the line super$($ANY$\_$INTEGER$)$; to have it fixed