Kotlin vs. Java – Which Programming Language Should You Learn in 2020?

It has been several years since Kotlin came out, and it has been doing well. Since it was created specifically to replace Java, Kotlin has naturally been compared with Java in many respects.

To help you decide which of the two languages you should pick up, I will compare some of the main features of each language so you can choose the one you want to learn.

These are the 8 points I’ll discuss in this article:

• Syntax
• Lambda Expressions
• Null Handling
• Model Classes
• Global Variables
• Concurrency
• Extension Functions
• Community

Syntax comparison

To start it all let’s do some basic syntax comparison. Many of you who are reading this might already have some knowledge about Java and/or Kotlin, but I will give out a basic example below so we can compare them directly:

Java

public class HelloClass { 

	public void FullName(String firstName, String lastName) {
    	String fullName = firstName + " " + lastName;
		System.out.println("My name is : " + fullName); 
	} 

    	public void Age() { 
		int age = 21;
		System.out.println("My age is : " + age); 
	} 

	public static void main(String args[]) { 
		HelloClass hello = new HelloClass(); 
		hello.FullName("John","Doe");
        hello.Age();
	} 
} 

Kotlin

class NameClass {
    fun FullName(firstName: String, lastName:String) {
        var fullName = "$firstName $lastName"
        println("My Name is : $fullName")
    }
}

fun Age() {
	var age : Int
    age = 21
    println("My age is: $age")
}

fun main(args: Array<String>) {
    NameClass().FullName("John","Doe")
    Age()
}

The feel of the code isn’t that different aside from some small syntax changes in the methods and classes.

But the real difference here is that Kotlin supports type inference where the variable type does not need to be declared. Also we don’t need semicolons ( ; ) anymore.

We can also note that Kotlin does not strictly enforce OOP like Java where everything must be contained inside a class. Take a look at fun Age and fun main in the example where it is not contained inside any class.

Kotlin also typically has fewer lines of codes, whereas Java adheres more to a traditional approach of making everything verbose.

One advantage of Kotlin over Java is Kotlin’s flexibility – it can choose to do everything in the traditional OOP approach or it can go a different way.

#kotlin #java #developer

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Learning by Doing: How to Learn Java Basics by Building Your Own Project

Java is not the hardest language to start with. So, it becomes way popular among novice developers joining the ranks of Java coders every single day. If you are reading this blog post, you might be interested in learning Java.

Java is widely used across industry, and especially in the area of Enterprise software, which results in many high paying job opportunities and makes this programming language a common language for newbies. A general promotion of it within colleges and other institutions providing a formal Computer Science education also contributes to its popularity.

However, these are not the only advantages of Java — among other things, it allows you to adopt good practices and makes it way easier to learn other languages in the future. And with no doubt, you can easily learn it if you’re following the right approach. In this post, I am going to share some of them with you.

The Importance of Practice in Programming

Beyond all doubt, practice is important and valuable. But, before we get to the advantages of hands-on experience, I want to draw your attention to one essential thing I often tell my students.

New programmers who are just learning and start implementing things, without being supervised, often end up adapting bad practices. To avoid that, especially when you are making your first steps in programming, I recommend looking for a person who will supervise you and teach you. A strong mentorship with someone engaged in a serious project, as well as communication within the community in the form of sharing code and asking for feedback, is worth the effort. Similarly, when you are applying for your first job, you want to be looking for a company with a strong team and a good leader who would be keen on investing into your learning.

Now, let’s return to practical experience. Learning by doing is different from learning by passively consuming the information. To make sure we can use all the newly acquired technology, we should put our skills to test and write tons of code. The benefits of hands-on experience are almost endless.

Efficiency and Productivity

By practicing, you get a clear understanding of what programming is. Consequently, you start doing better with each new hands-on task, complete it faster, and thus become more productive.

Even if you are not working on real-world projects yet, it’s important to get used to having deadlines. They are inextricably linked to the programming process. My recommendation is to set up your own deadlines while practicing stage and follow them as closely as possible.

#java #learn java #java code #learn java in easy way #learn java course #learn java development

How to Install OpenJDK 11 on CentOS 8

What is OpenJDK?

OpenJDk or Open Java Development Kit is a free, open-source framework of the Java Platform, Standard Edition (or Java SE). It contains the virtual machine, the Java Class Library, and the Java compiler. The difference between the Oracle OpenJDK and Oracle JDK is that OpenJDK is a source code reference point for the open-source model. Simultaneously, the Oracle JDK is a continuation or advanced model of the OpenJDK, which is not open source and requires a license to use.

In this article, we will be installing OpenJDK on Centos 8.

#tutorials #alternatives #centos #centos 8 #configuration #dnf #frameworks #java #java development kit #java ee #java environment variables #java framework #java jdk #java jre #java platform #java sdk #java se #jdk #jre #open java development kit #open source #openjdk #openjdk 11 #openjdk 8 #openjdk runtime environment

Top Tips for Learning Java Programming

If you’re here for the top tips, we assume you’re ahead of the “how to learn Java” part and already boarded on your flight of learning Java. In this lesson, apart from just throwing some do’s and don’ts, we’ll be asking some basic questions that will help you align your path with what’s best for you.

Are you following a plan?

Determining your goal and creating a learning strategy is more significant than you can probably think of. Your ambition, execution, and consistency can make or break your career. So if you want to become a full-time Java Developer shadowing a layout/map goes without saying.

Are you a master of the basics?

Mastering the basics doesn’t necessarily mean learning syntax by heart and not be able to do anything with it. It actually means you’re comfortable working with keywords, know the language protocols, smartly use variables and loops. Know how to choose a data structure depending upon a certain problem. Able to implement object orient approach, since Java is an object-oriented language. Understand encapsulation and how to tamper with it. With this much content freely available widely on the web, newbies are most likely to fell prey to learn more in a shorter period of time. However, you need to understand you can’t build a sustainable building over a weak foundation. Hence, it’s forever helpful to give due time to all the concepts in order to truly “master” them.

#java #learning java programming #java programming #top tips #top tips for learning java programming #programmers

Important Things For Java Developers To Learn In 2021

If you are looking to learn Java, you may be wondering where to start. Which technologies should you focus on? Whether you are new to the language, a middle-level learner, or already using Java at work, this article explores the essentials that you need to know.

Learning a programming language is a technological process that requires serious preparation. Otherwise, you can easily “choke” on the learning process itself.

I work for a company that created an interactive Java online course. From time to time, our graduates tell us about what they are required to know in interviews, and also about what technologies they use in their work. Based on these surveys, a shortlist of such technologies can be compiled.

#java #java-development #learn-to-code-java #tech-trends #learn-java #learning #learning-to-code #education

Recommended Java Practice Platforms for Your 10,000 Hours | Hacker Noon

The more you do something the better outcomes you gradually get. This common knowledge applies to Java programming as well. No reading and staring into the screen will get you as far as typing your own code.

Regular practice will teach you lots of great things: a problem-solving approach, tech intricacies, the algorithms you would never think of, and much more. Coding challenges and tasks get you through the levels.

With the multiple options available it’s still sometimes hard to decide where to get daily coding practice in Java. As a seasoned tutor and Senior Java developer, I’ve already checked up many resources. Some are really nice and I highly advise you to have a look at them.

Here’s the list of my favorite places where you get daily coding practice in Java.

#java #practice #learning-to-code #learn-java #learn-to-code #java-development #java-development-resources #java-programming