Exploring Java Inheritance and Recursion

What is inheritance in Java?

• A mechanism where a new class is derived from an existing class.

• A process of converting one data type to another.

• A way to store data in a database.

• A method to execute multiple threads simultaneously.

Which of the following is NOT a type of inheritance in Java?

• Single Inheritance

• Multiple Inheritance

• Multilevel Inheritance

• Hierarchical Inheritance

Define recursion in programming.

• A function that calls itself.

• A loop that iterates indefinitely.

• A method to sort data.

• A way to store data in arrays.

What is a base case in recursion?

• The condition under which a recursive function stops calling itself.

• The first call to a recursive function.

• The last call to a recursive function.

• A loop that runs indefinitely.

What is method overriding in Java?

• Defining a method in a subclass that has the same name and parameters as a method in its superclass.

• Defining multiple methods with the same name but different parameters.

• Changing the return type of a method.

• Using a method from a different class.

Which of the following is an example of a recursive algorithm?

• Binary Search

• Bubble Sort

• Factorial Calculation

• Linear Search

Explain how single inheritance works in Java.

• A class inherits from one superclass.

• A class inherits from multiple superclasses.

• A class inherits from a superclass and a subclass.

• A class does not inherit from any class.

How does method overriding support polymorphism in Java?

• It allows a subclass to provide a specific implementation of a method that is already defined in its superclass.

• It allows a class to have multiple methods with the same name but different parameters.

• It allows a class to inherit methods from multiple classes.

• It allows a class to change the return type of a method.

Describe a scenario where recursion is more beneficial than iteration.

• When the problem can be broken down into smaller, similar subproblems.

• When the problem requires a fixed number of iterations.

• When the problem involves sorting a list.

• When the problem requires accessing elements in a database.