Kotlin vs Java: Which Is More Suited For Android App Development?


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Java has been the language of choice on various devices for more than two decades. Java became the preferred  Android app development language for thousands of mobile apps since its inception. Google, however, announced that Kotlin will be the preferred programming language in Android applications in Google Play Store in May 2019.

Google recognized Kotlin in 2017 by making it the second language of Android application development. Both the enterprise and android developer communities have seen an incredible rise in demand for programming languages. The language has proven to be pragmatic, modern, intuitive, and practical.

We’ll be comparing Kotlin and Java in this article. This will give you a more detailed overview of Kotlin vs Java.

Kotlin: Overview

JetBrains is the leading open-source programming language Kotlin. It’s basically an integrated development environment (IDE). Additionally, it can be used to statically create JavaScript and Java Virtual Machine languages (JVM).

Kotlin combines functional and object-oriented programming. It is simpler, cleaner, and quicker to compile than Java. Kotlin has the ability to compile code into bytecode and run under JVM. It is therefore compatible with almost every platform and device.

Kotlin is used to create Android applications by large tech companies. Trello and Twitter are some of the most well-known apps made using this Android app development language.

Java: Overview

Java is an OOP language that is easy to use, powerful, robust, and versatile. It’s great for Android applications, web applications, server apps as well as embedded systems, and big data. Sun Microsystems released Java in 1995. Many elements can be found in open source.

Java, the third most-used language on GitHub, is the basis of a majority of Android apps and a significant portion of Android.

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Kotlin vs Java: What To Choose & What Not!!

1.    Volume And Speed of Coding

Kotlin will have a lower code volume than Java for similar programs. Kotlin minimizes errors in code and makes android app developers’ lives easier. Big app development projects favor Kotlin over Java because of its simplicity.

These languages are almost identical in terms of speed. Kotlin is faster than Java, but it takes longer to find the solution to a problem. Kotlin is the best choice for coders with abstract thinking skills.

Even though Java language-based programming is more complex than Kotlin, it’s easier to find the right solution than Java.

2.    Stability

Stability is the parameter that allows us to see the difference. Let’s get started with Java. Java is a language with a long history. Java 8 and Java 11 are two versions of this Android app development language that offer long-term support. What is long-term support? These versions can be updated with patches if something goes wrong.

Kotlin is a language that has been around for a while, but it’s still a young language. There is not a version that offers long-term support. We can generally call Java and Kotlin both stable languages. Java is the preferred choice if stability is your top priority.

3.    Performance

JVM runs ByteCode, which is compiled to Java and Kotlin. You cannot easily evaluate their memory usage. It is therefore difficult to quantify, measure, and track their performance.

Kotlin has more features than Java and is, therefore, more functional. Kotlin’s Coroutines tool makes multithreading apps easier. However, it compiles and executes slightly slower than Java due to a large number of features. Java, on the other side, is simpler than Kotlin and therefore compiles quicker.

4.    Smart Casts

Java android app developers must manually inspect the types of variables when developing programs. The operator will tell you how to cast the type.

Kotlin has an additional feature, Smart Casts. This feature did all the casting checks. Its intelligent compiler automatically replaces redundant castings with stable values. It monitors the explicit casts and checks immutable values.

5.    Popularity

Google Trends indicates that Java attracts more developers than Kotlin. Although Java has had its ups and falls, Java’s popularity is far greater than Kotlin. The main reason is Java’s longevity. Java requires fewer cognitive investments in learning, which is another reason. Java has won the popularity battle.

6.    Learning Curve

While both Java and Kotlin offer extensive documentation, Java is easier to learn than Kotlin. Java can be more difficult to use than Kotlin for solving a task. However, Java has been around longer and has a stronger community. A beginner can find documentation and help much more easily with Java.

Kotlin however requires more cognitive learning investments than Java. However, it is easier to learn than Java and can be used by experienced developers as well as visual learners.

7.    Wildcards

Kotlin is not compatible with wildcard types. Kotlin’s wildcard alternatives are type projections or declaration-site variance. Java supports wildcards. A wildcard code is typically a question mark. A type that isn’t known. It controls the type safety of Java-based Java code in a program.

Last Say

Kotlin is considered the official programming language to develop Android apps from the Google Play Store. Kotlin would be preferred by most developers for app acceptance by the Play Store.

Java, however, remains the universal programming language for Android and all other platforms. The final factor that will decide which  Android app development language is best for your Android app development project is the developer’s comfort and the sponsor’s marketing strategy. We have it all for the Kotlin and Java Battle, now it’s all on you.

Author’s Bio

Erma Winter is an adept app developer at MobileCoderz, a leading Android app development company. With 9 years of experience, she has worked with big enterprises and SMEs. Apart from professional expertise, she loves to read novels and write poems.

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