Given:
and
What is the result?
1z0-819 Exam QuestionsBrowse all questions from this exam
1z0-819 Exam - Question 112
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Correct Answer: BC
When the ConSub object is instantiated with the value 4, the ConSub(int a) constructor is called, printing '4'. Since there are no chained calls within ConSub(int a), no other constructors in ConSub are invoked. However, this constructor implicitly calls the superclass (ConSuper) constructor. The corresponding ConSuper(int a) constructor then prints '2'. The output is therefore '234', as the ConSuper() prints '3' after calling ConSuper(int a) with 'this(2)'.
Discussion
6 commentsObaltOption: C
Feb 8, 2023Correct answer is C
StavokOption: C
Jul 19, 2023C is correct Tested
OmnisumemOption: C
Sep 20, 2023Tested: C.
TheOneAboveAllOption: C
Oct 15, 2023Tested : C
d7bb0b2Option: C
Jan 11, 2024C is correct
ASPushkinOption: C
Jun 2, 2024answer: C Automatic invocation of a superclass constructor must be the first line in the subclass constructor. Doesn't matter parameterized or not. //default constructor not inserted class ConSub ConSub() { this(4) } //default constructor is inserted ConSub(int a) { System.out.println(a); } //default constructor not inserted // default class ConSuper - ok // protected constructor - ok class ConSuper { protected ConSuper() { this(2); System.out.println("3"); } //default constructor is inserted class ConSuper { protected ConSuper(int a) { System.out.println(a); } Object default constructor >2 >23 >234