7 Hard Skills That Every Java Developer Must Possess

1. Object-Oriented Programming

Object-Oriented Programming (OOP) includes:

Abstraction
Encapsulation
Polymorphism
Inheritance
Predefined types
User-defined types
Operations

2. Design Principles

The following are the main design elements that are crucial for Java developers:

SOLID Principles

Single Responsibility Principle (SRP)
Open/Closed Principle (OCP)
Liskov Substitution Principle (LSP)
Interface Segregation Principle (ISP)
Dependency Inversion Principle (DIP)
DRY (Don’t Repeat Yourself)
KISS (Keep it simple, Stupid!)
YAGNI (You ain’t gonna need it)

3. Architectural Patterns

Layered pattern
Client-server pattern
Master-slave pattern
Pipe-filter pattern
Broker pattern
Peer-to-peer pattern
Event-bus pattern
Model-view-controller pattern
Blackboard pattern
Interpreter pattern

4. Microservices

Java programmers must catch up with the movement toward creating microservices rather than large, centralized programs.

The Docker Container must be understood by developers. In various scenarios, microservices applications are developed and compiled using Docker. The DURS principles, which form the cornerstone of…