Iris Software Java Developer Interview Questions and Answers

Microservices can introduce complexity, communication overhead, and potential performance issues.

• Increased complexity due to managing multiple services

• Communication overhead between services

• Potential performance issues due to network latency

• Difficulty in maintaining consistency across services

No, @FunctionalInterface cannot be extended. Map and flatMap are default methods in the interface and cannot be overridden.

• No, @FunctionalInterface cannot be extended as it is a single abstract method interface.

• Map and flatMap are default methods in the interface and cannot be overridden.

• Example: public interface MyInterface { void myMethod(); default void myDefaultMethod() { // implementation } }