interview - CybAI news

06 Nov

Strings: Garbage Collection and Immutability in Java

stp2y0 CommentsNewsbeginners, coding, community, development, engineering, inclusive, interview, java, programming, software

In Java, strings play a unique role in memory management due to their immutability and interning characteristics. These concepts not only improve performance but also introduce nuances to memory handling that are often essential in interviews. Let’s explore Garbage Collection, and Immutability in depth, with notes on how the String Pool and JVM memory management interact with these concepts. This post builds on concepts discussed in the previous article on String Pool and Memory Management. Reviewing that article first will provide a helpful foundation for understanding the topics covered here. 1. String Garbage Collection In Java, string literals behave differently…

31 Oct

Polymorphism: Decoding Method Overloading in Java

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Method overloading is a form of compile-time polymorphism that allows us to define multiple methods with the same name but different parameters. This post dives into method overloading concepts, rules, and real-world examples, as well as a demonstration of how Java's println() method handles overloading. What is Method Overloading? Method overloading allows the same method name to perform different functions based on parameter type, number, or order. It is also referred to as static polymorphism since the appropriate method is determined at compile time. Note: Differences in access modifiers or return types alone do not qualify as valid overloads. Rules…

28 Oct

Abstraction: Decoding Abstract Classes in Java

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In this post, we explore Abstract Classes, an essential part of abstraction in Java. We'll build on concepts discussed earlier and examine how abstraction simplifies complex systems. Abstract classes serve as a blueprint for other classes, allowing us to focus only on relevant details while hiding unnecessary complexity. Let’s dive deeper into what abstract classes are, why they exist, and how they are used. What is an Abstract Class? An abstract class is a class that cannot be instantiated on its own. It’s designed to be extended by subclasses that provide concrete implementations for its abstract methods. In other words,…

27 Oct

What is an interface in Golang, and why is it important in building large-scale systems?

stp2y0 CommentsNewscoding, community, development, engineering, go, inclusive, interview, learning, software

An interface in Golang is a set of method signatures (behaviors) without specifying how they are implemented. Any type that implements those methods is said to satisfy the interface, without explicitly declaring so. This feature allows for flexible, decoupled, and modular design. type Animal interface { Speak() string } type Dog struct {} func (d Dog) Speak() string { return "Woof" } type Cat struct {} func (c Cat) Speak() string { return "Meow" } func MakeAnimalSpeak(a Animal) { fmt.Println(a.Speak()) } func main() { dog := Dog{} cat := Cat{} MakeAnimalSpeak(dog) MakeAnimalSpeak(cat) } Enter fullscreen mode Exit fullscreen mode In…

25 Oct

Finding the Right Job (OTB Ep 1: Jennifer Rorex)

stp2y0 CommentsNewscareer, coding, community, development, engineering, inclusive, interview, jobsearch, resume, software

Jennifer Rorex (HR Generalist) shares her unexpected journey to finding, not just any job, but the right job. -- Watch on YouTube Listen on Spotify RSS Amazon Music Apple Podcasts iHeart Radio Source link lol

24 Oct

DSA: Hash Table – Expanded Questions

stp2y0 CommentsNewscareerdevelopment, coding, community, development, engineering, hashmap, hashtable, inclusive, interview, software

DSA: Hash Table - Expanded Questions. Basic Conceptual Questions 1. What is a Hash Table? Explain with an example. Describe the fundamental concept of a hash table. Explain how keys are mapped to values using a hashing function. Provide a simple example to illustrate how data is stored and retrieved. 2. What is a Hash Function, and why is it important in a Hash Table? Explain the role of a hash function. Discuss properties of a good hash function (e.g., fast computation, uniform distribution). Give examples of commonly used hash functions. 3. What are the common uses of Hash Tables…

19 Oct

Beyond the Code: Why Character is Key to Unlocking Your Tech Career

stp2y0 CommentsNewscareer, coding, community, development, engineering, inclusive, interview, software

My recent experience hosting a series of mock coding interviews has shone a light on a crucial, often overlooked aspect of landing that dream tech job: character. While technical skills are undeniably important, they're only one piece of the puzzle. Strong character traits are essential for navigating the challenges of the job search and building a successful career in tech. The Missing Piece: I was surprised to see how often talented individuals with promising technical abilities faltered due to factors seemingly unrelated to coding. Excuses for missed appointments, a lack of focus, and a tendency to overcommit – these are…

06 Oct

Navigating JVM Memory: Key Concepts for Your Java Interview

stp2y0 CommentsNewscoding, community, development, engineering, inclusive, interview, java, jvm, memory, software

When preparing for Java developer interviews, understanding how memory is organized within the Java Virtual Machine (JVM) can be a key topic of discussion. This post will highlight the different memory areas in the JVM—specifically the Stack, Heap, and MetaSpace—providing essential points that interviewers may focus on. By familiarizing yourself with these concepts, you can enhance your interview readiness and demonstrate your understanding of Java memory management. The Roles of JDK, JRE, and JVM Before diving straight into the JVM's memory spaces, let's quickly explore the connection between the Java Development Kit (JDK), Java Runtime Environment (JRE), and Java Virtual…

30 Sep

Behavioural Interview Guidance

stp2y0 CommentsNewsbeginners, coding, community, development, engineering, hr, inclusive, interview, learning, software

1. Question: Tell me about a time when you had to handle a challenging project with tight deadlines. How did you manage to deliver it successfully? Possible Answer: "In my previous role as a project manager, I was given a tight deadline to implement a new CRM system across the organization. The challenge was the integration with our existing systems, which required a lot of customization. To meet the deadline, I prioritized tasks using a Kanban board, broke down the project into manageable sprints, and held daily stand-up meetings to ensure alignment. I also encouraged the team to escalate issues…

29 Sep

Collections.nCopies method in Java

stp2y0 CommentsNewscoding, collection, community, development, engineering, inclusive, interview, java, software

For Explanation watch video The Collections.nCopies method in Java is used to create an immutable list consisting of the same object repeated a specified number of times. This method is part of the java.util.Collections class. public static <T> List<T> nCopies(int n, T o) Enter fullscreen mode Exit fullscreen mode Parametersn: The number of times to repeat the object in the list.o: The object to be repeated in the list. Return ValueThe method returns an immutable list containing n copies of the specified object. Key Points The list returned is immutable, meaning you cannot modify it (e.g., you cannot add or…