Java: Why Builder Design Pattern is Important

And the challenges you’ll encounter without it

The Builder Pattern is a creational design pattern that provides a flexible solution for creating complex objects. It is particularly useful when an object has numerous optional parameters, or when the construction process involves multiple steps.

Lets see how the developer will struggle with code without it.

Without the Builder Pattern

Imagine you’re developing an application that requires creating instances of a Computer class. This class has several attributes, some required and others optional:

• Required attributes: CPU, RAM
• Optional attributes: Graphics Card, Bluetooth, Wi-Fi, Storage Type

Here’s how the Computer class might look without the Builder Pattern:

public class Computer {
    // Required parameters
    private String cpu;
    private int ram;

    // Optional parameters
    private String graphicsCard;
    private boolean bluetoothEnabled;
    private boolean wifiEnabled;
    private String storageType;

    public Computer(String cpu, int ram) {
        this.cpu = cpu;
        this.ram = ram;
    }

    // Setters for optional parameters
    public void setGraphicsCard(String…