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If
you are a developer, you know that there a number of programming languages and
it is tough to master all the languages. You also know that to reach heights in
programming you should master at least one language and if it is a trending
language like Java, it is much more rewarding. According to a recent survey,
Java is the second most-used programming language. Java developers are sought
in almost every industry where information technology has a major role. A Java
developer’s role requires high-level programming skills along with long working
hours. Let us peep through the special skills a Java developer requires to
become a top notch professional and these can be acquired with real time training in Java.
OOPs:
Object oriented programming is a programming paradigm and Java is a multi-paradigm
programming language. There are four fundamental concepts in OOPs.
- Abstraction – Abstraction refers to complex things represented by simple things. This is significant to avoid repeating same work a number of times. Simple things like objects, classes and variables represent code and data which is complex.
- Encapsulation – It means the bundling of data with the methods that operate on that data. It is used to hide data members and members function. It is a way to protect the data and code within the class by keeping fields within a class private.
- Inheritance – Inheritance is a feature of OOP which allows one class to inherit the fields and methods of another class. In this, there are two classes: super class and subclass. Super class or base class is the class whose features are inherited. Sub class or derived class is the class that inherits super class features. What differentiate sub class from the super class are the fields and methods that can be added to the subclass in addition to the super class fields and methods. The main use of inheritance is the reusability concept of a class which has code that can be derived from an existing class.
- Polymorphism – Polymorphism means to have multiple forms. It is a feature which enables to assign a different meaning or usage to something in different contexts. Understanding two types of polymorphism in Java is important. They are, compile time polymorphism and runtime polymorphism which can be performed by method overloading and method overriding.
JVM:
Java virtual machine refers to the abstract computing machine that enables a
computer to run on a Java program. A
programmer who wishes to become a great developer has to enhance skills on the
three notions of JVM – specification, implementation and instance.
Memory
management: Understanding memory management is also crucial to become a
proficient Java developer. JVM heap memory is divided into two – Young
generation and Old generation. All new objects are created in young generation
and when it is full, garbage collection is performed which is called Minor GC. Objects that have a long life and survive after
rounds of Minor GC are into Old generation and when this is full, garbage
collection is performed - called Major GC.
These
skills are not an exhaustive list of skills required to become a Java
professional, but some of the basic Java skills that need to be honed with real time training in Java. Placement
School is one of the best Java traininginstitutes in Hyderabad that offers real
time projects to give you an understanding of industry needs.
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