Pattern – Builder

"Builder: Separates the construction of a complex object from its representation, allowing the same construction process to create different representations.

Use case: When the construction of an object is complex and involves many steps."

HttpRequest request = new HttpRequest.HttpRequestBuilder()
    .setUrl("https://api.mygateway.com")
    .setMethod("POST")
    .addHeader("Content-Type", "application/json")
    .setBody("{\"key\": \"value\"}")
    .build();

How it works

Create a Builder instance

HttpRequestBuilder builder = new HttpRequestBuilder();

Set desired properties

HttpRequestBuilder request = builder
    .setUrl("https://api.example.com")
    .setMethod("POST")
    .addHeader("Content-Type", "application/json")
    .setBody("{\"key\": \"value\"}");

Build the object

HttpRequest httpRequest = request. Build();