Kotlin vs. Java
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Overview: The Kotlin mobile app development community is continuing to grow. Google has already announced Kotlin as one of the most preferred languages for Android app developers. This goes to show that this programming language will prove to be pragmatic, state-of-the-art, and intuitive. Lets check out the differentiation between Java and Kotlin programming languages that can be employed for Android app development.
Read this if... You are a newbie Android developer and a little bit confused between Kotlin vs. Java, then this pdf is for you. The pdf describes and compares both the programming languages based on their features and functionalities, so you can have a look at the comparison and decide which language has advanced features for Android development. ​After reading this piece of content; you can easily identify the basic difference between Kotlin and Java.
Created by Space-O Technologies
Java vs Kotlin Comparison Table SR No
Features
Kotlin
Java
Extension functions
In Java, we need to create a new Available in Kotlin. Extensions are class to extend the functionality of useful as they allow developers to the existing class, so from now users add methods to classes without can use a newly created class making changes to their source code. everywhere to use the extended functionality.
Null safety
Not available. In fact, Available. Kotlin’s type of system has NullPointerException is mainly inbuilt null safety. responsible for the development errors of Android and Java.
Static members
In Kotlin, we can use the companion object to create static members of the class. An object declaration inside a class can be marked with the companion keyword.
String templates
Yes, there are two types of string literals inKotlin such as escaped string Available in Java too, but it doesn’t and raw string. support expressions like Kotlin. Kotlin string template also supports expression.
5
Coroutines
In Java, users have two different options such as RxJava and Project In Kotlin, coroutines are concurrency Loom. RxJava is a library to compose design patterns that can be used to asynchronous and event-based simplify code on Android that programs using observable performs asynchronously. sequences lightweight concurrency model in Java.
6
No, Kotlin doesn’t have any Wildcard-ty wildcard-types. But it has two other pes things, including declaration-site variance.
1
2
3
4
Available in Java. It is used for memory management mainly. One can apply java static keyword with variables, methods, blocks and nested class.
Available in Java. Wildcard in general code means (?) that represents an unknown type. It can be used in different situations.
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7
No, it is not available in Java. Yes, this feature is available in Kotlin. However, to know the types in Java, Smart casts It helps Kotlin compiler to track we can use something like instanceof conditions inside if expression. to check the type and then cast it to the right type. Yes, it is available in Kotlin. It mainly decreased startup time that is useful This feature is not available in Java. when using Kotlin for app development.
8
LazyLoading
9
Kotlin removed exceptions entirely in In Java, the checked exceptions No checked order to minimize verbosity and feature is a problem as it causes exceptions improve type-safety. empty catch blocks.
Yes, Kotlin allows users to provide a way to invoke functions in order to Operator do an arithmetic operation, equality 10 overloading checks or comparison on whatever object we want, through symbols like +, -, /, *, %, <, >.
In Java, operators are tied to particular Java types. For instance, String and numeric types in Java can make use of + operator for concatenation and addition. Another Java type can’t reuse this operator.
Kotlin only has a primary constructor and one or more secondary In Java, constructors can be used to Constructor constructors. Talking about primary 11 take parameters that is used to s constructor, it is the part of the class initialize attributes. header and it goes after the class name.
Kotlin’s typing system is mainly designed to give users nullability 12 Type System support, type inference, and universal guards.
13 Collections
In Java, the type system involves not only classes and primitive types. Other kinds of reference type are related to the basic concept of a class; however, it varies in some way, and are mainly treated in a special way by Java or the JVM.
In Kotlin, the order of collections is similar as in Java: Collection, List and In Java, a collection is a group of Set. The only difference that you can individual objects that showed as a see is – it’s divided between mutable single unit. and immutable types.
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Conclusion In the end, it has got to be said that Kotlin has established itself as the preferred programming language for app development. The pdf describes and Compares the major points of Kotlin and Java languages. And this comparison will help you, as an Android developer, to understand the difference and decide which language is more preferable to developing Android apps.
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Created by Space-O Technologies