Based on data from the Stack Overflow Developer Survey (about 90,000 surveyed respondents), we can say that java development outsourcing is one of the five most popular developments. It is a universal object-oriented programming language that is used to create various information products:
* web applications (server side);
* mobile applications for Android;
* cloud data storage;
* desktop applications;
* computer games;
* software for banking systems, etc.
Java was created by Sun Microsystems in 1995. It quickly gained popularity among programmers and began to be used in the creation of client applications and server software. Java applications are translated into special bytecode that is executed by a JVM (Java Virtual Machine) that can be installed on almost any device. This makes programs developed in Java cross-platform.
What exactly do you need to know?
The Java language should be proficient at a fairly good level, so the list of topics necessary for mastering will be rather big.
Among the required basic sections: machine mathematics, variables and data types, conditional constructions, logical operations, looping constructions, methods, recursion, arrays, objects and classes, lists, exception handling, the Object superclass, Generics, working with memory.
Further more advanced topics follow: collections, maps (Map), output basics (IO, NIO), methods of working with strings (String, StringBuilder, StringBuffer), regular expressions, Date API, reflection, ClassLoader, annotations, Javadoc, VarArgs, serialization , cloning, streams and Runnable interface, lambda expressions, Stream API.
It is worth knowing that the set of the above sections of the Java + OOP paradigm in the environment of Javists is called Java Core.
In order to consolidate your knowledge and not to lose the acquired coding skills, we advise you to practice as often as possible and solve applied problems from the Internet or compiled yourself.
Algorithms and data structures
Understanding algorithms and data structures is a must for any programmer. This is the necessary foundation, thanks to which the developer learns to write good source code by choosing the optimal form of information presentation and sequence of actions.
By examining data structures, you can manage the complexity of your programs, make them easier to understand, and design high-performance applications that use memory more efficiently.
Knowledge of algorithms will allow you to create complex constructs to efficiently solve a wide range of problems in Java.
Design patterns
Patterns are architectural constructs that describe typical ways of solving common problems that arise during software design. In total, there are more than two dozen templates, but a software architect should masterfully own them, not an ordinary developer. Usually, a few patterns are used in one project, so you only need to know the most popular ones.
Thus, we have reviewed the main technologies that should be mastered by a candidate seeking to take the position of a Java developer. For many years, Java itself has firmly held high positions in all sorts of ratings of programming languages and is not going to leave its pedestal, as evidenced by the following statistics: dou.ua (Ukraine), tiobe.com (Tiobe is a Dutch company that evaluates software quality) , The aforementioned Stack Overflow Developer Survey and other information resources. And it is better to order such a development through professionals such as outsource net development solutions by dataxdev.
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