1z0-819 Exam - Question 58

Question

Given:What is the result?

Examice · Accepted Answer

The code will fail to compile. In the line 'ac = sc;', we are trying to assign a reference of type SomeClass to a variable of type AnotherClass. This is not allowed without an explicit cast, because a superclass reference cannot be directly assigned to a subclass reference; it needs explicit downcasting.

TADIEWA · Answer

c , child type cannot hold parent type reference , incompatible types .... but a parent type reference can hold up child type reference

Ankit1010 · Answer

C is the correct answer; 
Required type: AnotherClass
Provided: SomeClass

RP384 · Answer

child type cannot hold parent type reference

Stavok · Answer

C is Correct

Type mismatch: cannot convert from SomeClass to AnotherClass

tmuralimanohar · Answer

Answer: C

Omnisumem · Answer

Tested: C.

d7bb0b2 · Answer

C is correct, child variable cannot be a parent reference

mendjijet · Answer

C is correct

mrc61 · Answer

SomeClass cannot be converted to AnotherClass C.

public class q58 {
    public static void main(String[] args) {
        AnotherClass ac = new AnotherClass();
        SomeClass sc = new AnotherClass();
        ac = sc;
//        sc = ac;
        sc.methodA();
        ac.methodA();
    }
}

class SomeClass {
    public void methodA() {
        System.out.println("Some Class #methodA ()");
    }
}

class AnotherClass extends SomeClass {
    public void methodA() {
        System.out.println("AnotherClass#methodA() ");
    }
}

aruni_mishra · Answer

C.
superclass reference cannot be assigned to subclass reference without explicit cast.

1z0-819 Exam - Question 58

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