1z0-808 Exam - Question 7

Question

Given:And given the code fragment:What is the result?

Examice · Accepted Answer

The given code correctly uses the `super` keyword in the `Car` class's constructor to initialize the `Vehicle` class part of a `Car` object. The default values for `type` and `maxSpeed` fields in the `Vehicle` class are used when the no-argument constructor of the `Vehicle` class is called implicitly. Therefore, the result of the fragment is '4W 100 Auto' for the first instantiation and '4W 150 Manual' for the second instantiation, making the correct answer '4W 100 Auto 4W 150 Manual'.

RoxyFoxy · Answer

No compilation errors. I tested the code and the correct answer is A: "super()" and "this" were used correctly in the constructors.

miankita · Answer

Answer is A.
Child class constructors automatically called parent class one.

Philip0908 · Answer

This should be A!

carloswork · Answer

Answer is A.

To test:

package teste;

class Vehicle{
    String type = "4W";
    int maxSpeed = 100;
    
    Vehicle(String type, int maxSpeed){ //Construtor da classe Pai
        this.type=type;
        this.maxSpeed=maxSpeed;
    }
    Vehicle(){} // Construtor Default
} // fim da classe Vehicle

public class Car extends Vehicle{
	String trans;
	
    Car(String trans){ //line n1
        this.trans = trans;
    }
    
    Car(String type, int maxSpeed, String trans){
        super(type, maxSpeed); //line n2
        this.trans = trans;
    }

public static void main(String[] args) {
		
			Car c1=new Car("Auto");
		    Car c2=new Car("4W", 150, "Manual");
		    
		    System.out.println(c1.type + " " +c1.maxSpeed + " " + c1.trans);
		    System.out.println(c2.type + " " +c2.maxSpeed + " " + c2.trans);
		    
	} // Fim da main
} // Fim da class Car

Ancient1 · Answer

Answer: A
Tested: Yes
Notes: No issue of compilation in this case. Both c1 and c2 are calling super constructors (c1 is using an implicit call), which are defined properly.

Def8 · Answer

No compilation errors. Answer is A.

willokans · Answer

Answer is A
No compilation fail
c1.type and c1.maxSpeed have default values assinged to them in the Vehicle class.
calling c1.type will fetch the Vehicle.typevalue of "4W"
calling c1.maxSpeed will fetch the Vehicle.maxSpeed value of 100

samarrrr · Answer

instance variable can be inhertited , if the subclass dosent have the value ( variable ) the default it s not 0 or null , it s her superclass values

Faizal78 · Answer

child class must have a matched parent constructor or calling parent construction as in n2

kkaayyyy · Answer

Answer is A

Vicky_65 · Answer

Answer is A

mrstevebang · Answer

My answer is A

mbns · Answer

Who determines that the correct anwers is E? It is obviously A. I have tested.

a_really_reliable_programmer · Answer

Tested.

arjunrawatirissoftware · Answer

Answer -A

andradaradu · Answer

It is going to complain you're not overriding the parent constructor. Answer's E.

9de58b9 · Answer

Tested

1z0-808 Exam - Question 7

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