Coding Nebula Interview Questions, Process, and Tips

Classes are blueprints for creating objects, which are instances of a class.

• Classes define the properties and behaviors of objects.

• Objects are created from classes and can have their own unique values for properties.

• Classes can have methods that define the actions an object can perform.

• Objects can interact with each other through methods and properties.

• Inheritance allows classes to inherit properties and behaviors from...read more

Exception handling is a mechanism to handle runtime errors and prevent program crashes.

• It allows the program to gracefully handle errors and continue execution.

• It involves catching and handling exceptions using try-catch blocks.

• Common exceptions include NullPointerException, ArrayIndexOutOfBoundsException, and IOException.

• Exception handling can also involve throwing custom exceptions to handle specific errors.

• It is an ...read more

JSON is a lightweight data interchange format. Objects can be extracted using key-value pairs.

• JSON stands for JavaScript Object Notation

• It is a text format that is easy to read and write for humans

• Objects in JSON are enclosed in curly braces {}

• Arrays in JSON are enclosed in square brackets []

• To extract objects from JSON, use key-value pairs to access the desired data

Stack and queue are data structures used to store and retrieve data in a specific order.

• Stack is a Last-In-First-Out (LIFO) data structure where the last element added is the first one to be removed. Example: undo-redo feature in text editors.

• Queue is a First-In-First-Out (FIFO) data structure where the first element added is the first one to be removed. Example: waiting line in a restaurant.