Avoid These 9 Common Java Development Mistakes in 2022

Since its introduction in mid-1995, Java has come a long way. Its cross-platform capabilities have made it the industry standard for client-side web programming. However, with cybercrime and hacking reaching epidemic proportions as a result of its broad use and distribution, the necessity for secure Java programming has become urgent.

According to a new Kaspersky lab analysis, Java is the most attacked programming language, with more and more hacking instances being recorded globally. Java’s vulnerability stems primarily from its segmentation issue. Because not all java software development services providers are using the most recent version (Java 9), the most recent security updates are not always applied.

Within application security circles, there is a growing consensus that high code integrity is the best way to ensure applications are robust and resistant to the most common hacking techniques.

9 Java App Development Mistakes Developers Must Avoid

1. Planning before Coding

A one-hour planning session can save you ten hours of doing. If this is the case, a well-defined Java design strategy is essential. This would assist developers in determining the semantics – what to do and how to approach the Java enterprise application. If programmers start developing without a plan, they may end up with programs that are difficult to use. In addition, in large enterprises, efficient planning aids in adhering to the rigorous timetables provided to clients.

2. Codes should never be memorised

A common mistake that an enterprise software development company can avoid is using previously memorised codes. When developers use memorised codes without understanding them, they struggle to adapt their code to new situations, wasting time and potentially introducing errors. Any Java development company’s developers should be trained to approach coding logically rather than simply memorise the codes. It will aid them in understanding the codes written by other programmers, resulting in improved collaboration.

3. Forgetting to Break

Ignoring the broken component when coding can have serious implications. By omitting the broken part of a code, the program will write zero, followed by one. This causes the program to loop through the entire switch’ statement until it reaches a ‘break.’ If the error is not discovered until production, it can have a negative impact on Java solutions. As a result, always remember to include the break keyword wherever it is required.

4. Prevent Memory Leaks

Although Java employs automatic memory management, Java experts should not rely on it to save memory. The problem with permanent object referencing is that it exposes memory allocations to memory leaks. This is due to the trash collector’s inability to dispose of items that still retain references to them. If the field is not set to null once the collection is “thrown away,” it will never be collected. A memory leak could also refer to a collection of objects that reference each other, resulting in circular dependencies. This confuses the garbage collector as to whether they are required or not.

5. Release the Resources

Java software development services providers should write in such a way that they are accustomed to freeing resources after they have been used. Similarly, if an exception is thrown while operating on such resources, extreme caution must be exercised. Some may argue that the FileInputStream has a finalizer that can call the close() method on a garbage collection event; however, because we don’t know when a garbage collection cycle will begin, the input stream may consume computer resources indefinitely.

6. Libraries should not be avoided

A developer can make a significant error by ignoring existing open-source libraries. It is acceptable to use Java libraries because they were created by an experienced Java development company or independent coders after they encountered the same problems as you. To avoid time waste and the possibility of error, a Java programming company should train its developers with a dedicated Java certification Course to learn about Java libraries.

7. Standardise your designs

By implementing standard design solutions in a specific problem domain, a software development company can run programs more efficiently. This technique may produce good results with the majority of Java design errors that may occur while writing code for any application. This is why it is critical to understand how to use them correctly. Learn about the most common Java design patterns so that your code is not inefficient.

8. Confusing (==) for Equals while Comparing

The incorrect usage of (==) while comparing something is a very unusual yet common error made by a few Java development services.

  • The == operation directly compares two items.
  • The equals() method conceptually compares two objects.

When comparing two objects directly, the == operator should be used. Aside from that, the equals() method is used to meaningfully compare two objects.

9. Not Using Curly Braces

Braces are used to start and stop the code. Many inexperienced programmers violate this fundamental law of Java frameworks, resulting in incorrect code. This error is easily detected by the compiler and modern IDEs; programmers must still look for missing closing braces. Making a physical note before inserting the code is one of the best ways to avoid the problem.


Being a Java developer is a fascinating career path for those who enjoy logic and thinking. However, whether you are a newbie or an experienced worker, mistakes might occur when the work becomes difficult. Knowing the most common design flaws ahead of time can help you avoid or reduce production time while producing high-quality applications. Furthermore, understanding these can assist you in resolving JavaScript, HTML and Java code issues.

Finally, whatever you do to avoid the error, admitting any Java development errors in your code is the first step. This way, you can fix any errors right away, allowing the code to run smoothly.