Design Patterns in LOW level design

Design patterns are common solutions to recurring design problems in software development. They provide a structured approach to solving design problems and promote code reusability, maintainability, and scalability.

In low-level design, there are several design patterns that are commonly used to address specific design challenges. Let's explore some of the design patterns used in low-level design and their applications:

1. Singleton Design Pattern

The Singleton design pattern ensures that a class has only one instance and provides a global point of access to it. This pattern is often used in low-level design when you need to restrict the instantiation of a class to a single object. It is commonly used for managing shared resources, such as database connections or thread pools.

Here's an example of implementing the Singleton design pattern in Java:

1public class Singleton {
2  private static Singleton instance;
3
4  private Singleton() {
5    // Constructor logic
6  }
7
8  public static Singleton getInstance() {
9    if (instance == null) {
10      instance = new Singleton();
11    }
12    return instance;
13  }
14}

In the main method of a Java program, you can utilize the Singleton class as follows:

1public static void main(String[] args) {
2  Singleton singleton = Singleton.getInstance();
3}

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class Main {

  public static void main(String[] args) {

    // Replace with your Java logic here

    System.out.println("Singleton Design Pattern");

  }

}