Java is one of the famous coding languages that allows one to build scalable software. One of the main reasons it has been widely adopted is that it eliminates many complex issues that exist in other programming languages. In Australia, there are many streams related to Java and other opportunities that attract students. But there are a few constant mistakes that a student makes as a beginner. So they go for Java assignment help to overcome their issues.

You must be wondering what some of the common mistakes are that beginners make while writing assignments. This article will give you a brief overview of a few mistakes.


While Writing a Java Assignment, These Are Some Mistakes That a Beginner Do

Every student has a list of problems that they face while doing assignments. Also, some scholars face the same problem, so you are not alone. Let’s look at common mistakes made by students in writing Java assignments.


Coding Without a Plan: One of the most common mistakes happens when a beginner starts any project or assignment without any set of plans. To write a good Java code, planning is crucial as it helps students decide the semantics. It gives them a clear idea of what to do and how to approach the Java assignment. If a scholar does not have a Java plan, they may create complex applications that are difficult to maintain. So if you want to overcome this, practise it from day one.


Trying to Memorise Code: The second and most common mistake a scholar makes is memorising code without referencing it. Any student who only memorises code without understanding it will struggle to understand their code in new situations. All these things waste their time and create errors. It can also affect their learning of codes written by other coders. So, not only in Java but in other things as well, avoid remembering and instead focus on understanding the code. When writing Java code, beginners should note everything they gather while researching. If scholars are unsure about how things work, they can use Java API pages.


Using Raw Type Instead of a Parameterised: To use a raw type instead of a parameterised is a common java designing writing mistake. Many students use raw types instead of Java generics to define data types. It helps them create methods and classes that work with data types and maps. When you use raw data, your code becomes less flexible, and there is a higher chance of creating errors. So, one should use parametrised types instead of raw types when working with generics. This type helps in creating classes that work with various data types.


Neglecting Existing Libraries: The fourth mistake on the list is ignoring the open-source libraries available. Students should take advantage of Java libraries, which are created by experienced designers. All the professionals have dealt with the same issues that you must have. So they create a library that is beneficial to you. One never starts from scratch; instead, one should take an idea from the existing Java libraries. It can help them avoid wasting time. There are some top Java libraries:

1. Apache Commons


3. SLF4J.


Ignoring Causes of Compile Time Errors: Various times scholars make simple mistakes while writing codes that can result in compile-time errors. Many of you wonder what a compile-time error is; it is a syntax error found by the Java compiler during the compilation process. Any beginner should take the time to check their code and search for compile-time errors. It can help scholars find mistakes in Java source code before it gets finalised. Also, this can help scholars make a smoother code, which can help them further.


Having Null pointers: Null pointers in java are objects which present a pointer to a no object, as it refers to nothing or null. It can lead to runtime errors. It happens due to a situation in application code where an uninitialised object is an attempt to access or modify. A null character has a Boolean value, so a student should take care working with Java strings and Java collections. The most common scenarios for a null pointer exception are:

  1. To use a synchronised on a null object.
  2. To access a null object’s properties
  3. To access an array (an index element) of a null object.

To fix a null pointer exception a string should be checked for null values before it is used further.


Forgetting to Free Resources: To free up resources is important while coding in Java, as it leads to memory leaks and other performance issues. Any compatibility errors will arise if you do not release resources correctly. Students can free up resources by deleting unused objects from their memory. If you do this, your data will not hang and work smoothly. Java garbage collection is used to erase any unnecessary data. It is an in-built Java garbage collector in every Java class that helps to reclaim memory. So if you want your code to run smoothly, you should clear up unused data.


Not Using Design Patterns: Any design patterns for Java programmers are essential, as they help run programmes efficiently. This technique works for almost every Java design error you may encounter while writing code for any system. So it is essential to know how to use them correctly. If you do not use Java design patterns, this can lead to inefficient Java code. So always ensure that you are familiar with every Java design pattern.


Ignoring Exceptions: The final and most common mistake that scholars make is ignoring the exceptions. It is an object which tells about what went wrong during programming. This can happen for various reasons, so when that happens, pay attention and know why it has happened. Ignoring exceptions can cause the application to crash. Also, it will cost you time you spend resolving the issues, which can also lead to data loss. So scholars should make sure that they handle exceptions correctly so that their applications will not run into any errors in the future.


Being a Java student is not easy for anyone. It is obvious to make mistakes and face challenges while doing any code. Fortunately, students have options for opting for Java assignment help. By doing this, things get easy for students, as they save time and understand the subject better. Moreover, after receiving work, if you have any doubts, their customer support is available all day.