JAVA Constructors and Methods class A{ A(String s){} A(){}}1. class B extends A{2. B(){}3. B(String s){4. super(s);5. }6. void test(){7. // insert code here8. }9. }Which of the below code can be insert at line 7 to make clean compilation ? A a = new A(String s); All of these A a = new B(); A a = new B(5); None of these A a = new A(String s); All of these A a = new B(); A a = new B(5); None of these ANSWER DOWNLOAD EXAMIANS APP
JAVA Constructors and Methods The following code contains one compilation error, find it?public class Test {Test() { } // line 1static void Test() { this(); } // line 2 public static void main(String[] args) { // line 3Test(); // line 4}} At line 1, constructor Tester must be marked public like its class At line 2, constructor call At line 3, compilation error, ambiguity problem, compiler can't determine whether a constructor At line 4 At line 1, constructor Tester must be marked public like its class At line 2, constructor call At line 3, compilation error, ambiguity problem, compiler can't determine whether a constructor At line 4 ANSWER DOWNLOAD EXAMIANS APP
JAVA Constructors and Methods public class MyClass{ }For the above class(MyClass) what is the correct way of declaring constructor? MyClass(){} 1 and 3 MyClass(void) {} public MyClass(){} public MyClass(void){} MyClass(){} 1 and 3 MyClass(void) {} public MyClass(){} public MyClass(void){} ANSWER DOWNLOAD EXAMIANS APP
JAVA Constructors and Methods public class Test { }What is the prototype of the default constructor? public Test(void) Test(void) None of these Test( ) public Test( ) public Test(void) Test(void) None of these Test( ) public Test( ) ANSWER DOWNLOAD EXAMIANS APP
JAVA Constructors and Methods What is the expected output?public class Profile {private Profile(int w) { // line 1System.out.print(w);}public final Profile() { // line 5System.out.print(10);}public static void main(String args[]) {Profile obj = new Profile(50);}} Won't compile because of line (1); constructor can't be private 10 50 Won't compile because of line (5); constructor can't be final 50 Won't compile because of line (1); constructor can't be private 10 50 Won't compile because of line (5); constructor can't be final 50 ANSWER DOWNLOAD EXAMIANS APP
JAVA Constructors and Methods The variables declared in a class for the use of all methods of the class are called objects None of these instance variables reference variables objects None of these instance variables reference variables ANSWER DOWNLOAD EXAMIANS APP
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