Java Design Patterns: Essential Patterns Every Developer Should Know

Design patterns in Java provide proven solutions to common software design problems. Patterns like Singleton, Factory, and Observer improve code structure, making it more maintainable and scalable. Understanding these patterns is essential for writing high-quality software.

Here’s an example of the Singleton pattern:

public class Singleton {
    private static Singleton instance = new Singleton();

    private Singleton() {}

    public static Singleton getInstance() {
        return instance;
    }
}

The Singleton pattern ensures only one instance of a class is created. Learning design patterns helps developers write reusable and efficient Java code, following best practices in software development.