JAVA Constructors and Methods public class Test { }What is the prototype of the default constructor? None of these Test( ) public Test( ) public Test(void) Test(void) None of these Test( ) public Test( ) public Test(void) Test(void) 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 4 At line 2, constructor call At line 3, compilation error, ambiguity problem, compiler can't determine whether a constructor At line 1, constructor Tester must be marked public like its class At line 4 At line 2, constructor call At line 3, compilation error, ambiguity problem, compiler can't determine whether a constructor At line 1, constructor Tester must be marked public like its class ANSWER DOWNLOAD EXAMIANS APP
JAVA Constructors and Methods What is the expected output?class Animal {Animal() {System.out.println("Animal");}}class Wild extends Animal{Wild() {System.out.println("Wild");super();}}public class Test {public static void main(String args[]) {Wild wild = new Wild();}} Wild Animal Runtime Exception Animal Wild Compilation Error Wild Animal Runtime Exception Animal Wild Compilation Error 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 instance variables objects None of these reference variables instance variables objects None of these reference variables ANSWER DOWNLOAD EXAMIANS APP
JAVA Constructors and Methods Which of the following options is the best for generating random integer 0 or 1? (int)(Math.random() + 0.2) (int)(Math.random() + 0.5) (int)Math.random() + 1 (int)Math.random() (int)(Math.random() + 0.2) (int)(Math.random() + 0.5) (int)Math.random() + 1 (int)Math.random() ANSWER DOWNLOAD EXAMIANS APP
JAVA Constructors and Methods What is the output for the below code ?class A{ public A(){ System.out.println("A"); } public A(int i){ this(); System.out.println(i); }}class B extends A{ public B(){ System.out.println("B"); } public B(int i){ this(); System.out.println(i+3); }}public class Test{ public static void main (String[] args){ new B(5); }} B 8 A 5 A 5 B 8 A B 5 None of these A B 8 B 8 A 5 A 5 B 8 A B 5 None of these A B 8 ANSWER DOWNLOAD EXAMIANS APP
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