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Top 5 Data Visualization Tools every Data Analyst Should Know

Hello guys, Data Visualization is one of the most in-demand skills in today's data-centric world. More and more companies are tapping on their data to find opportunities and this is increasing demand for Data Analysts who can tell the story from their data.  Data visualization is the process of taking any raw data no matter that data belong to any industry and transform it into a representation of graphs shapes for better understanding your data and getting insights and better decision making for your business. In order to work effectively with data, you must know important tools and in this article, I am going to share with you 5 essential Data Visualization tools every Data Scientist and Data Analyst should know.

Top 10 Courses to Learn Data Structure and Algorithms in Java - Free and Best

Hello guys, In the past, I have shared a lot of useful resources like books and tutorials to learn Data Structure and Algorithms for both beginners and experienced programmers. I have also shared a lot of Data Structure and Algorithmic interview questions like this and their solutions in Java. Still, I have got continuously queries about excellent online courses to learn Data Structure and Algorithms in Java. Even though the topics are completely independent with the programming language, Java developer definitely likes the online courses which teach Data Structure and Algorithms in Java, and that's why my recent post about best algorithms courses, which includes algorithms courses from JavaScript and Python didn't impress my readers.

How to solve Two Sum Array Problem in Java - Find All Pairs of Array elements which adds to a given number?

Hello guys, if you have been solving coding problems or been through a couple of coding interviews then you might be familiar with the classical "Two Sum" problem. It's the classical problem of finding two numbers in a given array whose sum is equal to a given target number. It's a good problem to learn how array data structure works and programming basics like loops, conditionals, and operators. It's also good for developing your problem-solving skill and coding sense, which will help you in the long run. This is also a popular leetcode problem and commonly asked on coding interviews to both beginners and intermediate programmers.

How to combine two Map in Java? Example Tutorial

You can combine two maps in Java by using the putAll() method of java.util.Map interface. This method copies all the mappings from one Map to another, like, if you call it like first.putAll(second), then all mappings from the second Map will be copied into the first Map. This means if the first map contains 5 elements and the second map contains 10 elements or mapping, then the combined map will contain 15 or fewer mappings. In the case of duplicate keys, the value is overridden or updated from the second map.

Top 5 Courses to learn Next.js in 2020 - Best of Lot

Hello guys, if you follow web development news then you may know about Next.js, a React framework that helps in server-side rendering. The Next.js is touted as the next big thing in the web development world and 2020 may be a good time to learn Next.js. If you want to learn Next.js and looking for some excellent resources like books, tutorials, courses, and guides then you have come to the right place. In this article, I am going to share some of the best online training courses to learn Next.js from scratch.

What is difference between Heap and Stack Memory in Java JVM

One of the many traits of a good programmer is how well he understands the fundamentals and if you want to check the fundamentals of Java programmer than asking the difference between heap and stack memory is a good choice. Even though both are part of JVM and both consumer's memory allocated to the Java process, there are many differences between them like Heap memory is shared by all threads of Java application but Stack memory is local to each thread. Objects are created in heap memory but method frames are stored in Stack memory, and the size of heap space is much bigger than the small size of Stack in Java.