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(); None of these A a = new B(5); A a = new A(String s); All of these A a = new B(); None of these A a = new B(5); A a = new A(String s); All 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()); }} Prints 0 None of these Compilation Fails Prints 10 Prints 7 Prints 0 None of these Compilation Fails Prints 10 Prints 7 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)); } } does not compile The sum of x and y is 45 None of these The sum of x and y is 9 does not compile The sum of x and y is 45 None of these The sum of x and y is 9 ANSWER DOWNLOAD EXAMIANS APP
JAVA Constructors and Methods 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 2, constructor call 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 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 ANSWER DOWNLOAD EXAMIANS APP
JAVA Constructors and Methods public class MyClass{ }For the above class(MyClass) what is the correct way of declaring constructor? MyClass(void) {} MyClass(){} 1 and 3 public MyClass(void){} public MyClass(){} MyClass(void) {} MyClass(){} 1 and 3 public MyClass(void){} public MyClass(){} ANSWER DOWNLOAD EXAMIANS APP
JAVA Constructors and Methods 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() throw IOException{} examians() throws IOException{} void examians() throws IOException{} void examians() {} throws IOException void examians(void) throws IOException{} void examians() throw IOException{} examians() throws IOException{} void examians() throws IOException{} ANSWER DOWNLOAD EXAMIANS APP
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