27. What is the result when you compile and run the following code?
class A {
A(double d) {
System.out.println("Printing the value of d is 10");
}
}
public class B extends A {
B() {
System.out.println("Class B Constructor");
}
public static void main(String args[]) {
B b = new B();
}
}

[a] Printing the value of d is 10 followed by Class B Constructor
[b] Printing the value of d is 10
[c] Compile time error
[d] Run time error

Answer

28. What is the result when you compile and run the following code?
public class MyClass {
void MyClass() {
System.out.print(" Calling constructor");
}
public static void main( String arg[]) {
MyClass mc = new MyClass();
}
}
[a] Compile time error
[b] Runtime error
[c] Calling constructor printed
[d] Compiles successfully, no output at runtime.

Answer
[d] Compiles successfully , no output at runtime.

29. Select all the correct answers from the following?
[a] Default constructors takes no arguments.
[b] Constructors are defined with the name same name as class.
[c] A "void" is a valid return type for constructors.
[d] Default constructor is provided by the compiler, if no other constructors are defined.

Answer
[a] Default constructors takes no arguments.
[b] Constructors are defined with the name same name as class
[d] Default constructor is provided by the compiler , if no other constructors are defined.

30. Which of the statements are true?
[a] Overridden methods have the same method name and signature
[b] Overloaded methods have the same method name and signature
[c] Overridden methods have the same method name and different signature
[d] Overloaded methods have the same method name and different signature

Answer
[a] Overridden methods have the same method name and signature
[d] Overloaded methods have the same method name and different signature