This week, I read a Medium article called “Solving Everyday Problems: Essential Java Design Patterns You Need to Know” by Mina.
Link to the article
The post talks about how software developers use design patterns to handle common problems that come up while coding. It focuses on Java and explains how certain patterns, such as Singleton, Factory, Strategy, and Observer, help make programs cleaner, easier to update, and more reliable. Mina keeps the explanations simple and shows how each pattern can be used in everyday projects.
Why I Picked This Post
I chose this article because our course covers software design and programming in Java, and I wanted to better understand how professionals write well-structured code. Also the recent Homework assignments compelled me to explore for more knowledge on this complex topic. I wanted to learn how to organize my code better and avoid duplication. This post caught my attention because it explains the practical side of design patterns and connects them directly to real situations that developers face.
Summary of the Blog
The author starts by explaining what design patterns are — simple, reusable solutions for problems that appear often in programming. The patterns are grouped into three main categories: Creational, Structural, and Behavioral.
- Creational patterns (like Singleton and Factory) focus on how objects are created.
- Structural patterns deal with how classes and objects work together.
- Behavioral patterns handle how objects communicate with each other.
Mina gives short, clear Java examples for each type. For example, the Singleton Pattern ensures only one object of a class is created, which is useful for things like database connections. The Factory Pattern helps manage object creation without hardcoding specific classes. The Strategy Pattern allows different algorithms to be swapped easily, and the Observer Pattern is used when one object needs to respond to changes in another (like event listeners in Java).
What I Learned and How I’ll Use It
Reading this post helped me understand that design patterns aren’t just theory from textbooks. They are habits that experienced developers use to write smarter code. I learned how using the right pattern can save time and make programs easier to change later.
For example, in my Investment Wisdom Android app which I did as part of Operating Systems course, I can use the Factory Pattern to manage different types of investment data without repeating code. I also now understand the Observer Pattern better, which explains how buttons and screens update automatically in Android. These ideas will help me make my code cleaner and more organized.
Conclusion
This article gave me a clearer picture of how Java design patterns improve the way programs are built. It connects directly to what we are currently learning under the aegis of Professor Wurst. Going forward, I plan to use these patterns more often so that my programs are easier to test, expand, and understand.
Tags: CS@Worcester, CS-343, Week-8
Vish's Journey in Computer Science 
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