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 ? All of these A a = new B(5); A a = new A(String s); A a = new B(); None of these All of these A a = new B(5); A a = new A(String s); A a = new B(); None of these 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 50 Won't compile because of line (5); constructor can't be final 10 50 Won't compile because of line (1); constructor can't be private 50 Won't compile because of line (5); constructor can't be final ANSWER DOWNLOAD EXAMIANS APP
JAVA Constructors and Methods public class Test { }What is the prototype of the default constructor? Test(void) None of these Test( ) public Test(void) public Test( ) Test(void) None of these Test( ) public Test(void) public Test( ) ANSWER DOWNLOAD EXAMIANS APP
JAVA Constructors and Methods What is the output for the below code?public class Test{ public static void printValue(int i, int j, int k){ System.out.println("int"); } public static void printValue(byte...b){ System.out.println("long"); } public static void main(String... args){ byte b = 9; printValue(b,b,b); }} long None of these int Compilation fails Compilation clean but throws RuntimeException long None of these int Compilation fails Compilation clean but throws RuntimeException ANSWER DOWNLOAD EXAMIANS APP
JAVA Constructors and Methods 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++; }} Compilation Error 3 None of these 2 1 Compilation Error 3 None of these 2 1 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}} Compilation succeed but no output. Compilation fails due to an error on line 2 Compilation fails due to an error on line 1 One Compilation succeed but no output. Compilation fails due to an error on line 2 Compilation fails due to an error on line 1 One ANSWER DOWNLOAD EXAMIANS APP
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