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);}} 50 Won't compile because of line (5); constructor can't be final Won't compile because of line (1); constructor can't be private 10 50 TRUE ANSWER : ? YOUR ANSWER : ?
The variables declared in a class for the use of all methods of the class are called None of these reference variables objects instance variables TRUE ANSWER : ? YOUR ANSWER : ?
The implicit return type of a constructor is A class object in which it is defined. void There is no return type. None of these TRUE ANSWER : ? YOUR ANSWER : ?
The main method should be static for the reason It can be accessed easily by the class loader. It can be accessed by every method or variable without any hindrance. None of these It can be executed without creating any instance of the class. TRUE ANSWER : ? YOUR ANSWER : ?
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 1, constructor Tester must be marked public like its class At line 3, compilation error, ambiguity problem, compiler can't determine whether a constructor At line 2, constructor call TRUE ANSWER : ? YOUR ANSWER : ?
public class MyClass{ }For the above class(MyClass) what is the correct way of declaring constructor? 1 and 3 public MyClass(void){} MyClass(){} public MyClass(){} MyClass(void) {} TRUE ANSWER : ? YOUR ANSWER : ?
Which of the modifier can't be used for constructors? public protected static private TRUE ANSWER : ? YOUR ANSWER : ?
Determine output:public class Test{ public static void main(String args[]){ MyClass obj = new MyClass(); obj.val = 1; obj.call(obj); System.out.println(obj.val); }}class MyClass{ public int val; public void call(MyClass ref){ ref.val++; }} 1 3 2 None of these Compilation Error 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)); } } None of these does not compile The sum of x and y is 9 The sum of x and y is 45 TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following statements regarding static methods are correct?1. Static methods are difficult to maintain, because you can not change their implementation.2. Static methods can be called using an object reference to an object of the class in which this method is defined.3. Static methods are always public, because they are defined at class-level.4. Static methods do not have direct access to non-static methods which are defined inside the same class. 1 and 3 1 and 2 2 and 4 3 and 4 TRUE ANSWER : ? YOUR ANSWER : ?