How to use filter + map + collect + Stream in Java? Example Tutorial

Hello guys, many of my readers emailed me to write a post about the map and filter function of Java 8 because they found it difficult to understand and use. Even though I have previously blogged about both map() and filter(), I am writing this post again to explain the concept in more layman's language for a better understanding of my readers and fellow Java developers. The map() function is a method in Stream class that represents a functional programming concept. In simple words, the map() is used to transform one object into another by applying a function. That's the reason the Stream.map(Function mapper) takes a function as an argument. For example, by using map() function, you can convert a list of String into List of Integer by applying Integer.valueOf() method to each String on the input list.

Top 5 Free Pandas Courses for Beginners to learn Data Analysis in 2024 - Best of Lot

Hello guys, if you want to learn Pandas library, one o the most popular Python library for Data Scientists and Machine Learning engineers and looking for the best resources like online courses, books, tutorials, and training classes then you have come to the right place. Earlier, I have shared the best Pandas for Data Analysis courses and in this article, I am going to share free Pandas courses for beginners to learn in 2024. Many developers switched to learning python programming language due to its variety of libraries that offer developers, like creating web apps using Django.

How to prepare for AWS certified Advanced Networking Specialty Exam in 2024

Hello guys, if you are preparing for AWS Advanced Networking Specialty Certification in 2024 but not sure how to prepare for this exam then you have come to the right place. In the past, I have shared several AWS courses and Practice tests for different AWS Certifications like AWS Developer, AWS Solution Architect Associate, and AWS SysOps and in this article, I am going to share best resources and step by step guide to prepare for AWS Networking Specialty exam. Certification in AWS services and hybrid IT network designs may be shown by passing an exam such as the AWS Certified Advanced Networking Specialty test. This is not a beginner's exam, but rather a test for those who are already proficient in using AWS to do difficult networking tasks.

Top 50 SQL and Database Phone Interview Questions Answers

Database and SQL is a very important skill, not just for DBA or Database admins but also for any application developer like Java, .NET, or Web developers. This is why you would often see questions from SQL and Database in Programming interviews. For DBAs, SQL is more important than a programmer, because it being their primary skill, they are also expected to know more than a common Java or .NET developer. Since no Java interview is just about Java questions, many times I receive a request from my reader about SQL questions like how to solve a particular query or some tricky questions based upon database indexes.

How to use Environment Variables in Spring Boot's application.properties file? Example Tutorial

How to use environment variable in Spring boot's application.properties is a major problem when your spring boot application running on different places like local, Jenkins, and OpenShift. So we need to make the data source file dynamic in the application.properties file. So let's have look at how to do this at how to use the env variable in Spring Boot's application.properties. So in this tutorial, We assume that you have knowledge of Spring boot and not going to talk about small details. 

Top 5 Courses to Learn F# (F Sharp) for Beginners in 2024 - Best of Lot

For those who are new here, F# also called F sharp, is a functional programming language that allows you to solve complex problems by writing simple pieces of code.  F# makes it very easy to write concise code that can solve complex problems. It is a functional programming language like Scala, Haskell, Elixir, and Erlang. The best thing about F# programming language is that its available on all the major desktop and mobile platforms. F# is built on the .NET framework and offers good interoperability, portability, and speed. It also offers conciseness, convenience, correctness, concurrency, and completeness. 

Top 10 Pluralsight Courses to Learn Cloud Computing in 2024 - Best of Lot

Hello guys, if you are looking for best Pluralsight course to learn Cloud Computing in 2024 then you have come to the right place. In the past, I have shared best Pluralsight courses for Java Developers, and best Pluralsight courses to learn JavaScript, React.js, and Cyber Security and today, I am going to share with you best Cloud computing courses from Pluralsight. If you have Pluralsight membership, monthly, yearly or premium or from your company then these are truly the best resources to start with Cloud computing in 2024. But, before we get to the 10 best courses that will teach you all about cloud computing, let me tell you what the term cloud computing actually means.

Top 5 Courses for AWS Advanced Networking Specialty Exam in 2024 - Best of Lot

Before I tell you about the best courses that you can use to pass the AWS Advanced Networking Specialty Exam, let me tell you what exactly it is, right? It is basically a certification that allows organizations to identify and develop talent with critical skills for implementing cloud initiatives. If you earn the AWS Advanced Networking Specialty Certification, it means that you are an expert in designing and maintaining network architecture for a variety of AWS services. The AWS Certified Advanced Networking Specialty Exam is meant for individuals who perform complex networking tasks with five years of hands-on experience architecting and implementing network solutions. 

Top 5 Courses to Crack AWS Database Specialty (DBS-C01) Exam in 2026 - Best of Lot

Before I tell you about the Best Courses for the AWS Database Specialty exam, let me tell you what it exactly is. It is basically a certification that allows companies to identify and develop talent with critical skills for implementing cloud initiatives. If you earn an AWS Certified Database Specialty, it means that you are an expert in recommending, designing, and maintaining optimal AWS database solutions. The AWS Certified Database Specialty exam is meant for individuals with experience and expertise working with on-premises and AWS CLoud-based relational and non-relational databases.

Top 5 Courses to Crack Microsoft 365 Security Administration Exam MS-500 in 2024 - Best of Lot

Before I tell you about the best courses and certifications that can help you clear the MS-500, let me tell you what it is all about. The MS-500 is basically an exam that tests your ability to accomplish technical tasks like implementing and managing identity access, managing threat protection, implementing information protection, and managing governance and compliance features in Microsoft 365. As a candidate for this exam, you should be able to implement, manage, and monitor security and compliance solutions for Microsoft 365 and hybrid environments. A Microsoft 365 security administrator proactively secures Microsoft 365 enterprise environments, responds to threats, performs investigations, and enforces data governance.

Top 5 Courses to Crack Microsoft Azure Security Certification AZ-500 Exam Courses in 2024 - Best of Lot

Before we get to the 5 Best certification courses that you can use to clear the AZ-500 Microsoft Azure Security Exam, let me tell you what exactly this certification exam is all about. This is a certification exam that will test your ability to accomplish technical tasks like managing identity and access, implementing platform protection, managing security operations, and securing data and applications. As a candidate for this exam, you should be an expert at implementing Azure security protocols that can be used to protect data, access, identity, networks, and applications in cloud environments as part of an end-to-end infrastructure.

Top 5 Ionic Courses for Beginners to Learn Online in 2024 - Best of Lot

Ionic is a cross-platform, open-source UI toolkit for building mobile apps, desktop apps, and web apps. It is a very powerful framework as it allows developers to build only once and then use it everywhere. Ionic was created by Max Lynch, Ben Sperry, and Adam Bradley.  The first beta of the Ionic framework was released in 2014. The Ionic framework can be used to enhance the front-end experience and UI interaction. It also works well with other libraries and frameworks like Angular and Cordova. One of the main advantages of the Ionic framework is that it is free and open-source. This means that you can use it to build mobile-based applications for iOS, Android, and other operating systems using the same codebase.

Top 5 Practice Tests to Crack Azure Data Fundamentals DP-900 Exam in 2024 - Best of Lot

Hello everyone, If you are someone who is a developer, a student, or any other professional who wants or desires, or even aspires to be in the cloud industry, this information is for you. But you guys may be wondering what is this exam and what would be the knowledge required for it? Do not worry, let's take a look at that. Candidates for this test should have a solid understanding of key data principles and how Microsoft Azure data services may be used to apply them. This test is for students who are just getting started with cloud data. Candidates should be familiar with the principles of relational and non-relational data, as well as transactional and analytical data workloads.

Top 5 Courses to Learn Microsoft Project Tool in 2024 - Best of Lot

Most of you must have heard about Microsoft Word and Microsoft PowerPoint, right? But what is Microsoft Project? It is actually an application sold by Microsoft that can be used to manage products through project management tools. Microsoft Project is actually made up of a lot of different versions that allow users to understand and control project schedules and finances, communicate and present project information. The first version of Microsoft Project was actually released way back in 1985. The latest version of the software is Microsoft Project 2016. 

Top 10 Udacity Courses and Nano Degrees to Take in 2024 - Best of Lot

Hello guys, if you are looking for the best Udacity courses and Nanodegree programs then you have come to the right place. In the past, I have shared the best courses from Udemy, Coursera, Educative, Whizlabs, and CodeCademy and in this article, I am going to share the best online courses from Udacity to learn technical skills. You will find the best Udacity courses to learn Full stack development, Machine Learning, Deep Learning, Digital Marketing, as well many career-oriented courses to become a Product Manager, Data Analyst, and Software Engineers in 2024. But First things first. What exactly is Udacity? It is basically an online education provider that offers Massive Open Online Courses, also known as MOOCs.

3 ways to learn JavaScript in 2024 in Depth

Hello guys, if you want to learn JavaScript from scratch in 2024 and wondering what is the best way to learn JavaScript in 2024 then you have come to the right place. Earlier, I have shared the best JavaScript courses, books, and websites to learn JavaScript and in this article, I am going to share my 3-point formula which is the best way to learn JavaScript. It involves joining a JavaScript course, followed by reading a book and then doing a couple of projects to gain real-world experience. Along the way, I will also share resources like books, courses, tutorials, and JavaScript project ideas for beginners to build in 2024. You can use this approach and recommended resources to learn JavaScript from scratch in 2024.

Top 5 Websites to learn Cyber Security in 2024 - Best of Lot

Hello guys, if you want to learn Cyber Security in 2024 and looking for the best resources like websites, platforms, online courses, books, and tutorials then you have come to the right place.  Earlier, I have shared the best Cyber Security Courses and best Web Security courses and in this article, I am going to share the best websites to learn Cyber Security. These websites and platforms have numerous resources to learn Cyber security in-depth and prepare for various Cyber Security certifications. They are also very affordable and you can either join one of two courses or you can take membership to get access to all of their Cyber security training material 

How to Create a thread-safe ConcurrentHashSet in Java 8? [Example]

Until JDK 8, there was no way to create a large, thread-safe, ConcurrentHashSet in Java. The java.util.concurrent package doesn't even have a class called ConcurrentHashSet, but from JDK 8 onwards, you can use the newly added keySet(default value) and newKeySet() methods to create a ConcurrentHashSet backed by ConcurrentHashMap in Java. This is better than old tactical solutions like using a concurrent hash map with dummy value or using the set view of the map, where you cannot add new elements. The Set returned by keySet(defaultValue) and newKeySet() methods of JDK 8 is a proper set, where you can also add new elements along with performing other set operations like contains(), remove() etc.

Top 5 Computer Science and Software Engineering Online Degrees on Coursera in 2024 - Best of Lot

You may not know that, but Coursera, a popular online learning portal, also provides online degree programs from reputed universities around the world like the University of London and the University of Pennsylvania.  If you want to become a Computer Engineer or want a degree in Computer Science, Coursera provides an online degree course. This includes both a Bachelor's and a Masters's degree in Computer Science and Information Technology.  In this article,  I am going to share the best Computer Science degrees you can earn online. Computer science is the science of studying computer architecture and how it works the hardware and the software, the programming languages, the algorithms, and so on. It also includes science like a computer network and how to develop a programming language and data transfer protocols.

Review - Is Full-Stack Web Development with React Specialization on Coursera Worth It on 2024?

Hello guys, if you are looking for the best Coursera courses to learn Fullstack development using React.js or just want to join Full Stack Web Development with React Specialization in Coursera, you are unsure whether it's worth it not, then you have come to the right place. Earlier, I have shared the best React courses and courses to become full-stack developers, and in this article, I will review Coursera's most popular React course. Full-stack web development is the new area of software development where one person is talked into creating the whole website, and there is a huge demand for full-stack developers. It's a difficult job, but salary hikes and career opportunities make it very attractive, and that's why a lot of developers are learning about Fullstack development.

Top 5 Free Data Science courses on Coursera to become Data Scientist in 2024 - Best of Lot

Hello guys, if you want to learn Data Science on Coursera and are looking for free Coursera Courses for Data Science, you have come to the right place. Earlier, I have shared both the best Coursera courses for Data Science as well as 15 Free Coursera courses where I have shared few free Data Science courses, but many of you asked for more; hence, I have created this article where I have shared 5 best free Coursera courses for Data Science. These courses have been chosen from top universities like Johns Hopkins and the University of Michigan and famous tech companies like IBM. You can audit these courses for FREE to learn key Data Science concepts in 2024.