Which of the modifier can't be used for constructors? public protected static private TRUE ANSWER : ? YOUR ANSWER : ?
What will be the result of compiling and running the given code?class A{ int b=10; private A(){ this.b=7; } int f(){ return b; }}class B extends A{ int b;}public class Test{ public static void main(String[] args){ A a = new B(); System.out.println(a.f()); }} Prints 0 Prints 10 None of these Compilation Fails Prints 7 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();}} Compilation Error Wild Animal Runtime Exception Animal Wild TRUE ANSWER : ? YOUR ANSWER : ?
In which area of memory, the system stores parameters and local variables whenever a method is invoked? Array Stack Storage Area Heap 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); }} None of these A B 5 A B 8 A 5 B 8 B 8 A 5 TRUE ANSWER : ? YOUR ANSWER : ?
The finalize() method is called just prior to Before garbage collection. An object or variable goes out of scope. None of these An object, variable or method goes out of scope. A variable goes out of scope. 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? 0 0 0 8 5 8 5 0 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 succeed but no output. Compilation fails due to an error on line 1 Compilation fails due to an error on line 2 TRUE ANSWER : ? YOUR ANSWER : ?
public class Test { }What is the prototype of the default constructor? Test(void) None of these Test( ) public Test( ) public Test(void) TRUE ANSWER : ? YOUR ANSWER : ?