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.} 15 Compile fail due to error on line no 2 Compile fail due to error on line no 8 Compile fail due to error on line no 9 None 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);}} 50 10 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 TRUE ANSWER : ? YOUR ANSWER : ?
class MyClass{ MyClass(){ System.out.print("one"); } public void myMethod(){ this(); System.out.print("two"); }} public class TestClass{ public static void main(String args[]){ MyClass obj = new MyClass(); obj.myMethod(); }} one Exception Compilation Error two one one None of these one one two TRUE ANSWER : ? YOUR ANSWER : ?
The variables declared in a class for the use of all methods of the class are called objects None of these reference variables instance variables TRUE ANSWER : ? YOUR ANSWER : ?
public class MyClass{ }For the above class(MyClass) what is the correct way of declaring constructor? public MyClass(){} MyClass(void) {} public MyClass(void){} MyClass(){} 1 and 3 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 Won't compile because of line (1), constructor can't be private 50 10 50 TRUE ANSWER : ? YOUR ANSWER : ?
public class Test { }What is the prototype of the default constructor? Test( ) public Test( ) public Test(void) None of these Test(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 45 The sum of x and y is 9 None of these does not compile 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 2, constructor call At line 3, compilation error, ambiguity problem, compiler can't determine whether a constructor At line 4 At line 1, constructor Tester must be marked public like its class TRUE ANSWER : ? YOUR ANSWER : ?