The main method should be static for the reason It can be executed without creating any instance of the class. It can be accessed easily by the class loader. None of these It can be accessed by every method or variable without any hindrance. 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 : ?
What is the output of the above program ?class Num { Num(double x ){ System.out.println( x ) ; } }public class Test extends Num { public static void main(String[] args){ Num num = new Num( 2 ) ; } } Compile time error 2.0 0 None of these TRUE ANSWER : ? YOUR ANSWER : ?
What will be the return type of a method that not returns any value? int None of these double void TRUE ANSWER : ? YOUR ANSWER : ?
The finalize() method is called just prior to Before garbage collection. An object, variable or method goes out of scope. An object or variable goes out of scope. None of these A variable goes out of scope. TRUE ANSWER : ? YOUR ANSWER : ?
Which of the modifier can't be used for constructors? private static public protected TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following options is the best for generating random integer 0 or 1? (int)Math.random() + 1 (int)(Math.random() + 0.2) (int)(Math.random() + 0.5) (int)Math.random() 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)); } } does not compile None of these The sum of x and y is 45 The sum of x and y is 9 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 3 and 4 2 and 4 1 and 2 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();}} Wild Animal Runtime Exception Compilation Error Animal Wild TRUE ANSWER : ? YOUR ANSWER : ?