Fresher Than Fresh Java Programmer Interview Questions and Answers

Java is a versatile programming language known for its platform independence, object-oriented approach, and robustness.

• Platform independence: Java programs can run on any platform that has a Java Virtual Machine (JVM)

• Object-oriented approach: Java supports the principles of encapsulation, inheritance, and polymorphism

• Robustness: Java has strong memory management, exception handling, and type safety features

• Rich API: Ja...read more

Inheritance is a mechanism in Java where a new class inherits properties and behaviors from an existing class.

• Allows for code reusability and promotes a hierarchical relationship between classes

• Derived class (subclass) inherits attributes and methods from a base class (superclass)

• Example: class Dog extends Animal, where Dog inherits properties and behaviors from Animal

A servlet is a Java program that extends the capabilities of a server. It handles client requests and generates dynamic web content.

• Servlets are Java classes that are used to extend the capabilities of servers to handle requests and generate responses.

• Servlets are commonly used in web development to create dynamic web pages.

• Servlets follow the Java Servlet API, which provides a framework for writing servlets.

• Servlets c...read more

There are 4 main OOPs concepts: Inheritance, Encapsulation, Polymorphism, and Abstraction.

• Inheritance allows a class to inherit properties and behavior from another class.

• Encapsulation restricts access to certain components within a class.

• Polymorphism allows objects to be treated as instances of their parent class.

• Abstraction hides complex implementation details and only shows the necessary features.