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 8 Compile fail due to error on line no 2 None of these Compile fail due to error on line no 9 15 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 3 and 4 2 and 4 1 and 3 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++; }} 2 Compilation Error 3 None of these 1 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() {} throws IOException void examians(void) throws IOException{} void examians() throws IOException{} void examians() throw IOException{} examians() throws IOException{} TRUE ANSWER : ? YOUR ANSWER : ?
public class MyClass{ }For the above class(MyClass) what is the correct way of declaring constructor? MyClass(){} public MyClass(){} MyClass(void) {} public MyClass(void){} 1 and 3 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 1, constructor Tester must be marked public like its class At line 3, compilation error, ambiguity problem, compiler can't determine whether a constructor At line 4 At line 2, constructor call TRUE ANSWER : ? YOUR ANSWER : ?
Determine output of the following program.public class Test{ public static void main(String args[]){ System.out.println( Math.floor( Math.random( ) ) ) ; }} 1.0 10.0 0.0 0.5 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(); A a = new B(5); All of these A a = new A(String s); None of these TRUE ANSWER : ? YOUR ANSWER : ?
The implicit return type of a constructor is void There is no return type. None of these A class object in which it is defined. 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 : ?