Smartail Software Engineer Intern Trainee Interview Questions and Answers

A super class is a class that is inherited by other classes, providing them with common attributes and behaviors.

• Super class is also known as a base class or parent class.

• It serves as a blueprint for creating derived classes.

• Derived classes inherit the properties and methods of the super class.

• Super class can be extended or overridden by the derived classes.

• Super class promotes code reusability and modularity.

• Example: ...read more

Public and instance classes are two types of classes in object-oriented programming.

• Public classes can be accessed from anywhere in the program, while instance classes can only be accessed within their own instance.

• Public classes are often used for utility classes or classes that need to be accessed globally, while instance classes are used for encapsulation and data hiding.

• Example of public class: Math class in Java. ...read more

Entry point of Java program, must be public, static, void and accept array of strings as argument.

• public: method can be accessed from anywhere

• static: method belongs to class, not instance

• void: method does not return any value

• main: method name, entry point of program

• string args[]: array of strings, command line arguments