9 Common Java App Development Mistakes to Avoid in 2022

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Java is among the most frequently used programming languages by developers, with around 65 percent of those who participated in the survey conducted by Statista saying that they use JavaScript more than any other language. Furthermore, a lot of major mobile web apps like Spotify, Twitter, Opera Mini, Signal, and many more were developed using the extremely solid and reliable Java programming language. Programming languages have ruled various ecosystems for quite some time. Its portability, automatic garbage disposal, and quick learning curve are just a few factors that make Java app development a good option.

Although Java is perhaps the most popular and powerful programming language, it’s still susceptible to errors by developers. This blog aims to highlight nine common errors that can be made during Java development. Let’s take a look.

9 Mistakes Developers Need to Avoid for Java App Development

The planning process before the coding

A few minutes of planning could help you save 10 hours of effort. If this is the case, then having a clear Java design strategy is vital. This will assist the developers in deciding on the language, the things they need to do, and how to take on their Java Enterprise application.

If programmers start development without a clear plan, they could create programs that are difficult to utilize. Furthermore, in large organizations, good planning can aid in meeting customer deadlines.

Codes should never be memorized:

One common mistake that enterprises that develop software should avoid is using any codes they’ve learned earlier.

In the case of memorizing codes and not understanding them, programmers must adapt their code to the new environment, which wastes time and could lead to errors.

The developers in any Java development firm must be taught to approach programming in a way that is more than simply memorizing the code. It can help them comprehend code written by other programmers, which will lead to more collaboration.

Forgetting to Pause:

When programming, neglecting the part that is broken can have severe consequences. Inadvertently ignoring a broken component in a code could result in your program code being zero instead of one.This can cause the program to run through the entire “switch” and “expression” until it gets to a “break.”

If the error isn’t found until after production, this could damage Java solutions. Don’t forget to use the break keyword whenever you need to.

Avoid memory leaks:

Java uses automatic memory management. However, Java specialists should never count on it to save memory.

The problem with persistent object references is that memory allocations may be susceptible to leaks. This is due to the fact that the garbage collector cannot remove objects if they have references to them. In the absence of setting the field to null, once the collection has been “thrown away,” it is never removed from the garbage collection.

A memory leak may also be a reference to a collection of objects that are linked to each other, which can cause circular dependencies. This can confuse the garbage collection system as to whether the leak is required or not.

Release the Resources:

Java application development companies must program in such a way that resources are released after they have been used.Also, care must be taken when an exception is to be made during the operation of the resources.

One could argue that the File Input Stream contains a finalizer that may call the closing() method for an event of garbage collection; however, as we cannot be certain that a garbage collection process will begin and end, the input stream could use up computer resources for a long time.

Do not avoid libraries:

The choice to ignore open-source libraries that are available is a huge mistake that an individual developer could make. It’s fine to use Java libraries since they have been designed by experts at Java development companies or by independent developers who have dealt with similar issues to yours.

Instead of creating code from scratch, a Java development company should instruct its programmers to utilize the existing Java libraries in order to minimize delays and the risk of errors.

Implement standard designs:

A software development company is able to run applications more efficiently by applying standard design solutions to the specific domain of the problem.

This method can provide excellent results for the majority of Java design errors that could be made while writing code for any kind of application. This is the reason it’s important to understand how to utilize these techniques correctly. Learn about the most well-known Java design patterns to ensure your programs aren’t unproductive.

Confusion (==) for equals when comparing:

A rare, yet common mistake that only a handful of Java development services commit is using HTML 0 in the wrong way (==) in comparing something.

The operator == makes a direct comparison of two objects.

The equals() method is a way to compare two items semantically.

The operator == is a good choice when you wish to directly compare two objects. Apart from that, the equals() method is employed to compare two objects in a meaningful way.

Not Using Curly Braces:

Don’t use curly braces. These braces serve to allow and close the code. Some novice programmers do not follow this basic rule of Java frameworks, leading to code that is not functioning properly. This problem can be identified just by the compiler or modern IDEs, but programmers must look for any gaps in closing braces.

The most effective methods to avoid this issue are to create an outline of the physical area prior to inserting the code into it.


For those who are drawn to logic and logic, becoming a Java developer is an intriguing career path. However, whether you’re a novice or an experienced worker, mistakes can happen when the job is difficult.

Understanding the most common design errors ahead of time can help you prevent or cut down on the time it takes to create high-quality applications. Additionally, knowing these mistakes can assist you in solving the JavaScript, HTML, and Java code issues.

Whatever you do to prevent the error, acknowledging any Java errors that you have made in your code will be the initial step. As a result, you’ll be able to fix your mistakes as soon as possible, ensuring that the code runs smoothly.

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