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 A(String s); A a = new B(5); All of these None of these A a = new B(); A a = new A(String s); A a = new B(5); All of these None of these A a = new B(); ANSWER DOWNLOAD EXAMIANS APP
JAVA Constructors and Methods The main method should be static for the reason It can be accessed easily by the class loader. It can be executed without creating any instance of the class. None of these It can be accessed by every method or variable without any hindrance. It can be accessed easily by the class loader. It can be executed without creating any instance of the class. None of these It can be accessed by every method or variable without any hindrance. ANSWER DOWNLOAD EXAMIANS APP
JAVA Constructors and Methods 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 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 ANSWER DOWNLOAD EXAMIANS APP
JAVA Constructors and Methods Which of the following options is the best for generating random integer 0 or 1? (int)Math.random() + 1 (int)(Math.random() + 0.5) (int)Math.random() (int)(Math.random() + 0.2) (int)Math.random() + 1 (int)(Math.random() + 0.5) (int)Math.random() (int)(Math.random() + 0.2) ANSWER DOWNLOAD EXAMIANS APP
JAVA Constructors and Methods 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 one one two None of these two one one one Exception Compilation Error one one two None of these two one one ANSWER DOWNLOAD EXAMIANS APP
JAVA Constructors and Methods 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 9 The sum of x and y is 45 does not compile None of these The sum of x and y is 9 The sum of x and y is 45 does not compile None of these ANSWER DOWNLOAD EXAMIANS APP
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