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Editor to share with you what is the difference between Kotlin and Java, I believe that most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Overview of Java

As the oldest native language of Android, Java is a multi-platform and object-oriented language. When developing applications using Java, developers can create modular and robust applications. The best part is that Java is relatively easy to use, compile, debug, and deploy. In addition, it has a large number of ready-to-use third-party code that can be widely used. Because Java is open source, you can rely on it to ensure security, because different well-known companies manage their libraries. The top applications in Java are Twitter, Spotify, Signal, and so on.

Some of the major development challenges for Java include:

A somewhat complicated grammar

Slower than other languages

Android API design problem

Write more code

Overview of Kotlin

As a new language inspired by Java, Kotlin is simpler, lighter and more direct. It comes with fewer rules and is an improved version. Because there is less code, which helps speed up compilation, developers design applications that are smaller in size. However, you need to understand all the programming fundamentals and structures. The popular applications in Kotlin are Trello, Evernote, Pinterest, and so on.

Some of the major development challenges for Kotlin include:

Not very popular

A steep learning curve

Small support community

Kotlin versus Java

Features

Kotlin

Java

Null security

This option is available in Kotlin, and compile-time errors are displayed to the developer whenever null is returned.

NullPointer Exception is one of the most annoying mistakes when using Java in Android development.

String template

There are two options available in Kotlin, the original string and the escaped string. In addition, string templates also support expressions.

Templates are available in Java, but not as in the Kotlin language.

Static member

No static members of the class. Here, the developer must use companion objects to create these members of the class. Developers must declare objects in the class using the companion keyword.

This option is available in Java for memory management. This keyword can be applied to methods, variables, nested classes, and blocks.

Intelligent conversion

This feature helps the Kotlin compiler parse the conditions in the expression. If it finds that the expression returns a non-null value, even if it is a nullable expression, it allows access to the variable.

This feature is not available in Java. However, you can use an instance to check the type, and then the developer can convert it to the correct type.

Wildcard type

Wildcard types are not available in Kotlin. But it provides two other options, namely type projection and declaring site differences.

Java provides wildcard types that represent unknown types, and developers can use them in different situations according to their preferences.

Operator overloading

In Kotlin, developers can choose to call functions. Developers can use symbols such as -, +, *, /,%, etc., for equality checking, arithmetic operations, and so on.

For Java, operators are associated with certain data types. Operators cannot be used for types other than linked data types.

Extended function

With Kotlin, developers can use extension capabilities. Developers can use these functions to add methods to a class without having to change anything in their source code. They can smoothly extend the functionality of the class with new things.

This feature is not available in Java. In Java, developers must create a new class to extend the functionality of existing classes and use objects to use the new functionality.

Lazy keyword

This option is available in Kotlin and is very useful for developers when developing applications.

This specific feature does not exist in Java.

These are all the contents of this article entitled "what's the difference between Kotlin and Java". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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