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 4 At line 3, compilation error, ambiguity problem, compiler can't determine whether a constructor TRUE ANSWER : ? YOUR ANSWER : ?
What is the expected output?public class Profile { private Profile(int w) { // line 1 System.out.print(w); } public static Profile() { // line 5 System.out.print (10); } public static void main(String args[]) { Profile obj = new Profile(50); }} Won't compile because of line (5), constructor can't be static 10 50 Won't compile because of line (1), constructor can't be private 50 TRUE ANSWER : ? YOUR ANSWER : ?
Determine Output:class A{public static void method(int i){System.out.print("Method 1");}public static int method(String str){System.out.print("Method 2");return 0;}}public class Test{ public static void main(String args[]){A.method(5);}} Compile time error as final method can't be overloaded Method 1 None of these Method 2 TRUE ANSWER : ? YOUR ANSWER : ?
public class MyClass{ }For the above class(MyClass) what is the correct way of declaring constructor? public MyClass(){} public MyClass(void){} 1 and 3 MyClass(){} MyClass(void) {} TRUE ANSWER : ? YOUR ANSWER : ?
What is the output of the program?class Test{ public int display(int x, int y){ return ("The sum of x and y is " + x + y); } public static void main(String args[]){ Test test = new Test(); System.out.println(test.display(4,5)); } } The sum of x and y is 9 does not compile None of these The sum of x and y is 45 TRUE ANSWER : ? YOUR ANSWER : ?
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 50 Won't compile because of line (5); constructor can't be final 10 50 TRUE ANSWER : ? YOUR ANSWER : ?
The variables declared in a class for the use of all methods of the class are called instance variables None of these objects reference variables TRUE ANSWER : ? YOUR ANSWER : ?
In which area of memory, the system stores parameters and local variables whenever a method is invoked? Stack Heap Array Storage Area TRUE ANSWER : ? YOUR ANSWER : ?
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();}} Compilation Error Animal Wild Wild Animal Runtime Exception TRUE ANSWER : ? YOUR ANSWER : ?
Given the following piece of code:class Person{ public int number;}public class Test{ public void doIt(int i , Person p){ i = 5; p.number = 8; } public static void main(String args[]){ int x = 0; Person p = new Person(); new Test().doIt(x, p); System.out.println(x + " " + p.number); }}What is the result? 5 0 0 8 0 0 5 8 TRUE ANSWER : ? YOUR ANSWER : ?