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Android Kotlin Vs Java: Java Explained

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When it comes to writing code for Android apps, two major languages stand out: Java and Kotlin. Kotlin is the newer entrant on the scene, but Java has been around since the 1990s. Both languages have their own strengths and weaknesses, and deciding which one to use can be a difficult decision. In this article, we’ll dive into Java and explore its advantages and disadvantages. We’ll also compare it to Kotlin and discuss when it’s best to use Java when developing Android apps.

What is Java?

Java is an object-oriented programming language developed by Oracle in 1995. Although it was originally designed for embedded systems, it has grown to become one of the most popular programming languages in the world. It’s used for a variety of tasks, from server-side applications to mobile app development.

Java follows the syntax of C and C++ and is largely centered around objects and classes. Unlike Kotlin, which is statically typed, Java is also a dynamically typed language. This means that you can change a variable’s type at runtime, which simplifies a lot of tasks.

Java is also platform independent, meaning that it can be used on any operating system. This makes it a great choice for developing applications that need to be used across multiple platforms. Additionally, Java is a secure language, with built-in security features that help protect against malicious attacks.

Benefits of Java

Java offers some real advantages over other languages. Firstly, it is extremely reliable. Due to its use of a virtual machine, all code written in Java will run the same way regardless of the underlying platform. This makes debugging easier and reduces the number of errors that might be encountered when porting code from one system to another.

Another advantage is its level of portability. Java can easily be ported from one computer system to another without any major changes. This makes it ideal for use in cross-platform applications.

Finally, Java is a secure language, thanks to its automatic garbage collection and the virtual machine’s ability to control memory access. This increases the overall life span of a Java program and reduces the risk of malicious attacks.

In addition, Java is an object-oriented language, which makes it easier to create complex applications. It also has a large library of pre-written code, which can be used to quickly develop applications. This makes it a great choice for developers who need to create applications quickly and efficiently.

Advantages of Kotlin Over Java

Kotlin was released in 2011 and it has quickly become a popular choice for Android app development. One of its advantages over Java is that it is statically typed, which reduces the possibility of errors when writing code. Unlike Java, Kotlin also has support for higher-order functions, which makes writing more concise, efficient code easier.

In addition, Kotlin also offers improved readability. It eliminates the need for unnecessary boilerplate code which often makes Java code difficult to read. This makes it easier for developers to work with large amounts of code without being overwhelmed.

Kotlin also offers improved interoperability with Java. This means that developers can use existing Java libraries and frameworks in their Kotlin projects, making it easier to integrate existing code into new projects. Furthermore, Kotlin is also more secure than Java, as it eliminates the possibility of certain types of errors that can lead to security vulnerabilities.

Disadvantages of Java

Although there are many advantages to using Java, there are a few disadvantages that should be considered as well. One of these is the fact that Java has a very complicated syntax. It’s difficult to learn, and many developers take much longer than they would with other languages.

Also, Java can be slow. It compiles code in multiple steps and allocates more memory than may be necessary compared to other languages. This can result in slower performance and memory leaks which can lead to unexpected errors or crashes.

When Should You Use Java?

Java is ideal for larger projects that require extensive cross-platform functionality. The language is powerful enough to handle such tasks, and its reliability means that there are fewer chances for errors or unexpected bugs.

In addition, if you need a language that can easily be used in legacy systems or with third-party components, then Java is often the best choice. This is due to its compatibility with many different types of systems.

When Should You Use Kotlin?

If you’re looking for a language that provides greater performance than Java, then Kotlin is worth considering. Its statically typed nature improves readability and helps reduce the number of errors in your code. In addition, the reduced amount of unnecessary boilerplate code makes it much faster to develop applications with.

Kotlin is also a great choice for smaller projects or those with limited cross-platform needs. It’s easier to learn than Java and quicker to write code with as well.

Tips for Writing Better Code in Java

Since its release over twenty years ago, Java has evolved into one of the most reliable languages for mobile app development. However, with such a complicated syntax, it can be easy to make mistakes when writing your code. Here are some tips for writing better code with Java.

  • Use descriptive variable names: This will make it much easier to read and debug your code.
  • Avoid unnecessary code: Boilerplate code can make your code difficult to read and make debugging harder.
  • Read code from other developers: Learning from others is often one of the best ways to improve your own skills.
  • Use coding guidelines: Establishing coding guidelines for yourself will help keep your code clean and consistent.
  • Make use of frameworks: Frameworks such as Spring can make coding easier by providing helpful methods and reducing the amount of repetitive tasks.

Best Practices for Working With Kotlin

Kotlin has grown in popularity over the last few years, with many developers striving to learn the language in order to take advantage of its benefits over Java. Here are some tips for making the most out of working with this language:

  • Stick with standard syntax: While it can be tempting to use non-standard syntax shortcuts, they can make your code more difficult to debug in the future.
  • Avoid ‘null’ statements: Kotlin offers robust ‘null’ checking tools that help reduce bugs caused by improper variable assignment.
  • Make use of extensions: Extensions can quickly add useful methods to existing classes and reduce boilerplate code.
  • Use advanced features judiciously: Features such as ‘inline’ functions and generics can help simplify your code but should be used with caution.

Final Thoughts On Android Kotlin Vs Java

Both Kotlin and Java offer powerful ways to develop Android apps. Each one has their own strengths and weaknesses, so it’s important to decide which one is right for you based on your particular needs. If your project requires high levels of reliability or involves compatibility with other systems, then Java may be your best choice. On the other hand, if you need something with greater speed or require advanced features like generic functions then Kotlin could be preferable. Ultimately, you will have to weigh the pros and cons carefully before deciding on one or the other.

Anand Das

Anand Das

Anand is Co-founder and CTO of Bito. He leads technical strategy and engineering, and is our biggest user! Formerly, Anand was CTO of Eyeota, a data company acquired by Dun & Bradstreet. He is co-founder of PubMatic, where he led the building of an ad exchange system that handles over 1 Trillion bids per day.

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