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 ) ; } } 2.0 Compile time error None of these 0 TRUE ANSWER : ? YOUR ANSWER : ?
What is the output for the below code ?1. public class A{2. int add(int i, int j){3. return i+j;4. }5. }6. public class B extends A{7. public static void main(String argv[]){8. short s = 9;9. System.out.println(add(s,6));10. }11.} Compile fail due to error on line no 2 None of these Compile fail due to error on line no 9 15 Compile fail due to error on line no 8 TRUE ANSWER : ? YOUR ANSWER : ?
class A{ A(String s){} A(){}}1. class B extends A{2. B(){}3. B(String s){4. super(s);5. }6. void test(){7. // insert code here8. }9. }Which of the below code can be insert at line 7 to make clean compilation ? A a = new B(5); A a = new A(String s); A a = new B(); None of these All of these 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 (5); constructor can't be final 50 10 50 Won't compile because of line (1); constructor can't be private TRUE ANSWER : ? YOUR ANSWER : ?
Which of the modifier can't be used for constructors? static public private protected 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 45 None of these does not compile The sum of x and y is 9 TRUE ANSWER : ? YOUR ANSWER : ?
The variables declared in a class for the use of all methods of the class are called objects reference variables instance variables None of these TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following options is the best for generating random integer 0 or 1? (int)(Math.random() + 0.5) (int)Math.random() + 1 (int)(Math.random() + 0.2) (int)Math.random() TRUE ANSWER : ? YOUR ANSWER : ?
Which of these is a legal definition of a method named examveda assuming it throws IOException, and returns void. Also assume that the method does not take any arguments. Select the one correct answer. void examians() throw IOException{} void examians() {} throws IOException examians() throws IOException{} void examians() throws IOException{} void examians(void) throws IOException{} TRUE ANSWER : ? YOUR ANSWER : ?
public class Test { }What is the prototype of the default constructor? None of these public Test(void) public Test( ) Test(void) Test( ) TRUE ANSWER : ? YOUR ANSWER : ?