Determine output of the following program.public class Test{ public static void main(String args[]){ System.out.println( Math.floor( Math.random( ) ) ) ; }} 10.0 0.5 1.0 0.0 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 8 5 0 0 0 0 8 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 2 1 and 3 2 and 4 3 and 4 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 0 None of these 2.0 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 (1), constructor can't be private 10 50 Won't compile because of line (5), constructor can't be static 50 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++; }} 3 Compilation Error None of these 1 2 TRUE ANSWER : ? YOUR ANSWER : ?
Which of the modifier can't be used for constructors? static protected public private TRUE ANSWER : ? YOUR ANSWER : ?
What will be the return type of a method that not returns any value? None of these void int double TRUE ANSWER : ? YOUR ANSWER : ?
public class MyClass{ }For the above class(MyClass) what is the correct way of declaring constructor? public MyClass(){} MyClass(){} public MyClass(void){} 1 and 3 MyClass(void) {} TRUE ANSWER : ? YOUR ANSWER : ?