Skip to main content
PreparationZone Logo
PreparationZone
Sign up
Back to Fundamentals

Fundamentals · Hard · Free

Explain the Factory pattern with a simple API client example.

FresherFundamentalsOOP & Language Fundamentals
Model answer

Factory pattern

A factory centralizes object creation so callers depend on an interface, not new ConcreteClient() scattered everywhere.

java
interface ApiClient { Response get(String path); }
class ApiClientFactory {
  static ApiClient forEnv(String env) {
    return env.equals("prod") ? new ProdClient() : new MockClient();
  }
}
Tie to config-driven wiring (Spring @Bean is factory at scale).