Wenzor Technologies Software Developer Interview Questions and Answers

HTML is used for structuring content on a webpage, while CSS is used for styling the content.

• HTML is a markup language, while CSS is a styling language.

• HTML is used to create the structure of a webpage, while CSS is used to control the layout and design.

• HTML uses tags to define elements, while CSS uses selectors to apply styles.

• Example: <h1>This is a heading</h1> (HTML) vs h1 { color: blue; } (CSS)

JDK is a development kit, JRE is a runtime environment, and JVM is a virtual machine.

• JDK includes JRE and development tools

• JRE includes JVM and necessary libraries

• JVM executes Java bytecode

• JDK is used for developing Java applications

• JRE is used for running Java applications

• JVM is platform-dependent

API stands for Application Programming Interface. It is a set of protocols, routines, and tools for building software applications.

• API allows different software applications to communicate with each other

• It defines how software components should interact

• API provides a layer of abstraction between the application and the underlying system

• Examples of APIs include Google Maps API, Twitter API, and Facebook API

Thread is a lightweight sub-process that executes a set of instructions independently.

• Threads allow concurrent execution of multiple parts of a program.

• Java provides built-in support for multithreading through the Thread class.

• Threads can be created by extending the Thread class or implementing the Runnable interface.

• Thread synchronization is important to avoid race conditions and ensure thread safety.

Inheritance is a mechanism where a new class is derived from an existing class. Polymorphism is the ability of an object to take on many forms. Encapsulation is the practice of hiding the internal workings of an object from the outside world.

• Inheritance allows a subclass to inherit properties and methods from a superclass.

• Polymorphism allows objects of different classes to be treated as if they were objects of the same...read more

Methods in Java are blocks of code that perform a specific task and can be called upon to execute that task.

• Methods are declared within a class and can be public, private, or protected.

• Methods can have parameters and return values.

• Methods can be overloaded, meaning multiple methods can have the same name but different parameters.

• Methods can also be overridden, meaning a subclass can provide its own implementation of a ...read more

Static keyword in Java is used to create class-level variables and methods.

• Static variables are shared among all instances of a class

• Static methods can be called without creating an instance of the class

• Static blocks are used to initialize static variables

• Static import is used to import static members of a class