Top 5 Data Structures and Algorithm Online Courses for Programmers - Best of Lot

Data Structure and Algorithm is one of the most important topics for programmers. The best thing about them is that they never get out-of-date and any investment you made in terms of time and money will pay rich dividends. I have also found that people good on algorithms and data structures are often a better programmer than others. They tend to improve your programming skill and coding sense and that's the main reason I suggest all kinds of programmers, from junior to senior to spend some time revising, refreshing and honing your data structure and algorithm skills. Most of us first heard about them in school and colleges but didn't understand at that time. At least I can say that for me. I first heard about array and linked list on my engineering college.

Top 5 Courses to Learn Python in 2018 - Best of Lot

If you are a Programmer or a Computer Science graduate and thinking to learn Python in 2018 then you have come to the right place. In this article, I am going to share some of the best online courses to learn Python in 2018. Python is one of the most popular programming languages and it's used in many domains e.g. Web development, Automation, Data Science, Machine learning etc. In recent years, Python has also become as a default language for Data Science and Machine learning Projects and that's another reason why many experienced programmers are learning Python in 2018. It's also one of the top languages on my list of programming language to learn in 2018. But, for all its power and flexibility, Python is still a very simple language to learn and often touted as beginner's programming language.

How to convert float to long or int data type in Java?

Yesterday one of the new joiner Java Trainee Engineer from our team came to me and asked about how do you I convert a float variable into long or int data type? He was storing some values coming from another system in the database and only wanted to store value before the decimal point e.g. he was getting "3.144" and he wants to convert it to "3" to store into database. The good thing was that API was returning a float primitive value and you don't need to convert a String to float etc. I asked him whether he needs routing or not, which he wasn't sure but it turns out that he didn't need that. I explained to him how to do that and that's what you will find in this article as well. In short, there are 3 ways to convert a float value into long or int in Java, but we will only focus on long data type part.

Top 15 Java Multithreading, Concurrency Interview Questions Answers asked in Investment banks

Multi-threading and concurrency questions are an essential part of any Java interview. If you are going for any Java interview on any Investment bank e.g. Barclays, Citibank, Morgan Stanley etc for Cash Equities Front Office Java Developer position, you can expect a lot of multi-threading interview questions on your way. Multi-threading and concurrency are favorite topics on Investment banking interviews,  especially on electronic trading development jobs and they grill candidate on many tricky java thread interview questions. They just want to ensure that the guy has solid knowledge of multi-threading and concurrent programming in Java because most of them are in the business of performance which provides them a competitive advantage and it's hard to write correct and robust concurrent code.

How to find a Process Listening on a Specific Port in Linux? netstat and lsof command examples

In Linux, many times, you want to find out the PID of a process which is listening on a port e.g. if multiple tomcat servers are running on a host and you have to kill that process, but in order to kill that process you need the process id, how do you find the PID of the tomcat listening on port 8080? There are many Linux commands to find the process using a specific port, but I'll share what I use. I always use the netstat command with -p option, which displays process id of the process listening on a port. Btw, netstat is not the only command to find all processes using a particular port, you can also use the lsof command for the same purpose.

Top 10 Popular Programming languages and their Inventors

There are many programming languages out there in the software world and they are still coming like Scala, Go, Closure etc, but the only handful of them have managed to survive to date. These are the ones who have contributed immensely to software development. Since programming language is a single most important thing in software development world, it's often discussed, criticized and improved over the years. Programmers and developers, who those programming languages are icons of the programming world and sometimes I feel sad when a guy using a programming language doesn't know, who is behind that.