Design Patterns in Java
A design patterns are well-proved solution for solving the specific problem/task.
Now, a question will be arising in your mind what kind of specific problem? Let me explain by taking an example.
But remember one-thing, design patterns are programming language independent strategies for solving the common object-oriented design problems. That means, a design pattern represents an idea, not a particular implementation.
By using the design patterns you can make your code more flexible, reusable and maintainable. It is the most important part because java internally follows design patterns.
To become a professional software developer, you must know at least some popular solutions (i.e. design patterns) to the coding problems.
Advantage of design pattern:
When should we use the design patterns?
We must use the design patterns during the analysis and requirement phase of SDLC(Software Development Life Cycle).
Design patterns ease the analysis and requirement phase of SDLC by providing information based on prior hands-on experiences.
Categorization of design patterns:
Basically, design patterns are categorized into two parts: