Java vs Kotlin most Important details that You Must Know

Java Vs Kotlin

Which language should a beginner learn, Java vs Kotlin

Here in this blog, Codeavail experts will help you to understand about Java vs Kotlin. If they are your only option, we agree that if you already had some exposure to programming, Java might be easier. If you’re about to make a total start with any initial thoughts or habits, Kotlin puts you on a better path to programming with concise, idiomatic, functional, language.

It gives you the right ideas from the beginning instead of someone like me. Learns with habits that had to be learned again.

What should I learn, Java, Kotlin, or both

Java vs Kotlin are two different things. It is more versatile so likes Kotlin.

In Java SE, EE, Servelet, android and so on.

Kotlin is used for Android programming if we are right. There is probably another use of it.

But it depends on what you want android programming to learn you have another option i.e. DART Programming

Java has the best library support between two if you want to develop a desktop app.

Now coming to the questions maybe you’re asking for Android development so we recommend you go for Java because it’s more versatile. 

Perhaps in 2-3 years if Kotlin will replace Java. However, Kotlin is not only competitive in the market. Some other languages such as Python, Dart, etc. are available. If any of them replace Java, learn that.

Why Java is good

  • Good library support
  • Support is readily available
  • Login with social networks available to almost all websites
  • Easy to program and fast
  • The same language can be used in other functions (e.g. Java EE)

Why Kotlin is good

Google supports Kotlin

Which one is better: Java VS Kotlin

Since we’re comparing Java to Kotlin, there’s no clear answer. Let us compare the pros and cons of these two languages.

Java Pros:

1. Since Java has been around for a long time, you have a huge ecosystem of tools and packages for a variety of tasks.

2. A lot of documents are also available online in Java.

3. Java has a large community of developers.

4. Java inspired by C. So developers with some experience in C or C++ or any C-style language can easily learn Java. 

5. Java can be used to build a variety of applications. From back end web services to mobile applications (Android).

Java Cons:

1. Java is a quite functional language. This means you have to write a long piece of code to do something work.

2. Java is comparatively slow.

Kotlin Pros:

1. Easy to read and understand.

2. Easy to pick.

3. Since Kotlin’s syntax is not a Java-like action, the code written in Kotlin is very concise.

4. Kotlin is fully compatible with Java and it is compiled with existing Java code.

Kotlin Cons:

1. Kotlin is a new programming language, so it doesn’t have as many packages.

2. Learning resources are limited.

3. The compilation of Kotlin is slow.

As you can see, both languages have their own pros and cons. 

Why is Kotlin so complicated compared to Java

No, Kotlin is not complicated compared to Java.

However, if you already have some experience working in Java, you can see stuck syntax or what this code is going to do but only for a week or two. After that, you will get used to it.

If you don’t know Java or any other language, the complexity of Kotlin will be slightly less than java.

If you know many languages, Kotlin is much less complex than Java.

Kotlin is quite feature-rich compared to Java, which is actually quite a small language.

Advantages of Kotlin Over Java

1. It is completely interoperable with Java

As already mentioned above, the greatest suitability with using Kotlin is that it is compatible with Java!

With all your tools and outlines, you can simply add them to your Kotlin projects – good and easy—plus there’s no need to change the whole project in Java.

Therefore, it goes without saying that, once/or so, it goes. If you make up your mind going to Kotlin, migrating your project from Java is actually a piece of cake.

2. It’s more concise than Java (method)

And this is, of course, one of Kotlin’s biggest benefits on Java Android development: you are able to solve similar problems using fewer lines of code that can only be translated into a more reliable code with fewer bugs and crashes on the UX side.

It doesn’t mention all the other benefits that are obtained with the consent of the code, including the code:

Easier to maintain

Easy to read

Easy to implement changes if needed

Some features of Kotlin for its code consent “Responsible” Are:

Date Classes

Smart Cast

Type Interface


3. Secure code

We’ve already decided that Kotlin’s code is more concise, so it goes without saying that concise, compact and clear code means securely secure code!

Being more compact, it allows fewer errors. And, I should mention here that it’s by design that Kotlin prevents common programming errors, translating it into:

  • Fewer Accidents
  • A low number of system failures

“But what do you mean by preventing mistakes from design?”

I mean developers are encouraged to consider the potential issues that their code can be from the early stages of the app’s development process. And, thus, Kotlin allows developers to be vigilant and write more robust and stable code in production.

4. It comes with a smarter and safer compiler

Adding a good compiler has been one of the main goals of Kotlin’s development team when he built this programming language.

Some important aspects of the compiler in Kotlin are as follows:

Compile detects errors at the time, not at runtime, “Fail-fast” takes advantage of the principle

Checks lots to reduce the number of runtime errors and bugs in the code

5. It’s easy to maintain

It is not for no reason that Kotlin for all application developments “One-stop language” Is – it supports a lot of IDE, including Android Studio.

Therefore, you are free to use the already tried and tested development tools that you are comfortable keeping on the scale of your codebase. It’s those “Hard-to-resist-to” advantages of Kotlin on Java.

6. It is designed to boost your productivity

One of Kotlin’s major advantages on Java is that it’s built with developer productivity in mind.

And, it goes without saying that increased productivity goes back to abbreviate the code, including its own spontaneous syntax and overall clean language design. It will take you less time to write a new code in Kotlin, deploy it and keep it massive.

And, there is more to boost productivity growth in Kotlin than its concise and clear code. In this regard, this language is from a lot of powerful features “Equipped” Having been, which speeds up every day’s development works:

  • Declaration of object
  • Parameter Value
  • Extension Functions

7. It “Spoils” with better support for functional programming you

What does it mean?

That means:

  • You can improve your mobile app’s performance through inline
  • You can “joggle with” functional concepts in a more explicit and concise way
  • This is because Kotlin allows you to perform the appropriate type of work to use in this regard

8. It is disabled in its type system

Invalidity issues have been one of Java’s famous sore points. Because in Android “Null”, This is a normal thing in Android for the absence of certain values to be represented as it is, so Kotlin addresses these issues by keeping the tap right in its type of system.

Final Thoughts

Two things are sure when comparing Kotlin to Java for Android application development:

  • Java isn’t going anywhere, and it will be a long time until it is completely phased out by Kotlin.
  • Kotlin, on the other hand, is here to stay and will be even more developer-friendly over time. Specifically, Atlassian, Pinterest, Basecamp, Coursera has implemented Kotlin’s new features in its mobile application.

Some major differences between Java and Kotlin

  • Zero-security at compiling time. Variables, properties, parameters, and return types declare clearly null and potentially null values should be handled.
  • This is the added advantage of creating null type for the back-compatible version of any syntactic or optional with runtime overhead found in Java or Scala.
  • First-class works which not declare in any class.
  • The ability to declare a receiver, such as some features above and above those in Java 8.
  • Coroutines for very efficient multitasking.
  • Simple declaratory price type with no requirement for boilerplate getters, setters, equals and hash implementations in boilers.
  • Type information and flow typing need so you don’t need the over-specification of specific information typed in Java and very rarely need to cast.
  • By default, the focus is on irreversibleness so that variable declarations and collection types are irreversible unless otherwise specified.
  • Scoped extension functions that offer a lot of choice of static utility methods and enable really impressive type-safe DSL.
  • Templated strings.
  • Default method logic and name method logic.
  • Modified generics on methods (ever wanted to be able to refer to the runtime type of normal?)

Some Java issues addressed in Kotlin

  • Kotlin fixes a series of issues that suffer from Java:
  • System control invalid reference types.
  • No raw type
  • Arrays in Kotlin are invariant
  • Kotlin has proper types of functions unlike Java’s SAM-conversions
  • Use-to-site variance without wildcards
  • Kotlin has no exceptions

What Java that Kotlin doesn’t do

  • Exceptions checked
  • Primitive types that are not classes
  • static member
  • non-private sector
  • wildcard type
  • ternary operator

What Kotlin has that Java does not

  • Lambda Expression + Inline Function = Performance of Custom Control Structures
  • Null-safety
  • Extension function
  • Smart Cast
  • String Templates
  • Properties
  • Primary constructor
  • First Class Delegation
  • Write about variables and types of properties
  • Singletons
  • Declaration-site variance and type estimates
  • Category Expressions
  • Operator Overloading
  • Companion Objects
  • Date Classes
  • Separate interfaces for read-only and interconnected collection
  • Coroutines


Now you know the better details about Java Vs Kotlin. If you have any queries, assignments, homework, and project help. Codeavail experts are available for you to provide you the best java assignment help and Programming Assignment Help at an affordable price.