Java: Pattern Abuse Question Difference between Adapter and Decorator? (Click to reveal answer) Answer Adapter changes interface; Decorator enhances behavior. An Adapter makes one interface work as another, while a Decorator adds new behavior. In Java, use an Adapter to integrate a legacy payment gateway with a new system, and a Decorator to add features like logging to existing functionality. Additional NotesDifference between Adapter and Decorator? Track: Java Topic: Software Architecture Focus: Pattern Abuse Topics: Java Pattern Abuse Software Architecture