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(); }} Compilation Error one one two one Exception two one one None of these 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 Compilation Error 2 None of these TRUE ANSWER : ? YOUR ANSWER : ?
What is the output for the below code ?class A{ public A(){ System.out.println("A"); } public A(int i){ this(); System.out.println(i); }}class B extends A{ public B(){ System.out.println("B"); } public B(int i){ this(); System.out.println(i+3); }}public class Test{ public static void main (String[] args){ new B(5); }} A B 8 A B 5 B 8 A 5 A 5 B 8 None of these TRUE ANSWER : ? YOUR ANSWER : ?
class MyClass{int i;int j;public MyClass(int i, int j){this.i = i;this.j = j;}public void call(){System.out.print("One");}}public class Test{public static void main(String args[]){MyClass m = new MyClass(); //line 1m.call(); //line 2}} One Compilation fails due to an error on line 2 Compilation fails due to an error on line 1 Compilation succeed but no output. TRUE ANSWER : ? YOUR ANSWER : ?
The finalize() method is called just prior to Before garbage collection. An object or variable goes out of scope. A variable goes out of scope. An object, variable or method goes out of scope. None of these 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); }} 50 10 50 Won't compile because of line (1), constructor can't be private Won't compile because of line (5), constructor can't be static 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);}} 10 50 Won't compile because of line (1); constructor can't be private Won't compile because of line (5); constructor can't be final 50 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 3, compilation error, ambiguity problem, compiler can't determine whether a constructor At line 2, constructor call At line 1, constructor Tester must be marked public like its class At line 4 TRUE ANSWER : ? YOUR ANSWER : ?
The variables declared in a class for the use of all methods of the class are called reference variables objects None of these instance variables TRUE ANSWER : ? YOUR ANSWER : ?
public class Test { }What is the prototype of the default constructor? None of these public Test( ) public Test(void) Test( ) Test(void) TRUE ANSWER : ? YOUR ANSWER : ?