The world runs on Java. Ok, not exactly, but when a programming language has 9 million developers (equal to the population of Sweden), its popularity speaks for itself. It revolutionized software development with its “write once, run everywhere” paradigm. Java development is correlated with the ubiquity of Java Virtual Machines. As per estimates, 97% of Enterprise Desktops run Java.
However, Java developers also face issues. Here is a list of top 8 difficult situations Java programmers can get themselves into during a project:
1. Lines and lines of code:
To accomplish any task in java requires writing a lot of lines. For example, in python, printing “Hello world” is a one line program. In java, it takes a minimum of three lines and 4 curly braces. Quick prototyping is difficult when a language requires so many lines of code to accomplish even the most basic tasks. Hence, the language is not very conducive for a swift and dirty implementation of an idea.
2. Variable mêlée:
Like any God fearing programmer, you religiously follow the getter-setter convention for class variables, but your colleague doesn’t. To access the variables in his class, you need to actually type the name of the variable. And now you are mixing his convention with yours, and feel like tearing your hair out.
3. Improper Exception handling:
A hundred lines of code where you open files, persist records into the database, try to access elements in an array, have multiple ‘for’ loops, and parse strings. All those lines of code inside a single try catch block with the log entry being “Error”. When the code crashes during runtime, you realize your folly. And you are not happy. Because now you have to filter the cause of the crash from a list of probable causes.
Due to its widespread usage, Eclipse IDE has become synonymous with java based development. Most programmers use it because of its unmatched support and array of helpful plug-ins. But the dependency on Eclipse means that productivity suffers if we are not able to configure the project on the eclipse.
5. Extensive Java libraries:
An elaborate collection of libraries is one of the most attractive features in java. If you can think of it, a library to accomplish it exists. However, these libraries can also pull down the performance of your code. In many cases, the libraries are not optimized for performance. They carelessly instantiate objects when the same could be accomplished by using primitive data types, hence dragging the performance down.
6. Java garbage collection and memory leaks:
Java Virtual Machine (JVM) has inbuilt garbage collection mechanism which is one of its most crowning achievements. However, that might make a developer complacent, and lead him towards “java.lang.OutOfMemoryError”. Sometimes you have to increase the memory allocation for the JVM, but several other times, the developer might have ended up using a lot of temporary objects and not de-referencing them once done. It could also be caused by improper usage of static variables, or not removing elements from Java collections like Maps and Vectors.
7. Version Mismatch:
You developed your application using Java 7, the production environment has Java 6. And now we have a list of UnsupportedClassVersionError staring at our face.
8. Java web, a no-no:
Java is bad for web development. Especially, the front-end part. Java is considered bloated, heavy and the applet revolution it promised never happened.
Problem or not, at the end of the day, a Java programmer will most definitely have the patience, skill, and determination to get out of a tight spot. If all else fails, a new solution might just get typed up!
Now you know why JAVA is important and how you can be the kind of JAVA developer companies are looking for. If you are looking for someone to train you on JAVA, ZeoLearn offers JAVA course that works under the supervision of experienced professionals within the niche.