JAVA Constructors and Methods 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); A a = new A(String s); All of these None of these A a = new B(); A a = new B(5); A a = new A(String s); All of these None of these ANSWER DOWNLOAD EXAMIANS APP
JAVA Constructors and Methods 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()); }} None of these Prints 7 Prints 10 Prints 0 Compilation Fails None of these Prints 7 Prints 10 Prints 0 Compilation Fails ANSWER DOWNLOAD EXAMIANS APP
JAVA Constructors and Methods 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); }} B 8 A 5 A B 5 None of these A 5 B 8 A B 8 B 8 A 5 A B 5 None of these A 5 B 8 A B 8 ANSWER DOWNLOAD EXAMIANS APP
JAVA Constructors and Methods Which of the modifier can't be used for constructors? public private protected static public private protected static ANSWER DOWNLOAD EXAMIANS APP
JAVA Constructors and Methods 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 succeed but no output. Compilation fails due to an error on line 1 One Compilation fails due to an error on line 2 Compilation succeed but no output. Compilation fails due to an error on line 1 ANSWER DOWNLOAD EXAMIANS APP
JAVA Constructors and Methods 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. 2 and 4 1 and 2 3 and 4 1 and 3 2 and 4 1 and 2 3 and 4 1 and 3 ANSWER DOWNLOAD EXAMIANS APP
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