Mintoak Innovations Java Developer Interview Questions, Process, and Tips for Experienced

Functional interfaces in Java are interfaces with a single abstract method, used for lambda expressions and method references.

• Functional interfaces have only one abstract method, but can have multiple default or static methods.

• Examples include java.lang.Runnable, java.util.Comparator, and java.util.function.Predicate.

• Functional interfaces can be used with lambda expressions and method references for concise code.

Spring Boot annotations are used to simplify the development process by providing metadata to the Spring framework.

• Annotations like @RestController, @RequestMapping, and @Autowired are commonly used in Spring Boot to define controllers, request mappings, and dependency injection.

• Annotations like @SpringBootApplication are used to bootstrap the Spring application context.

• Annotations like @ComponentScan and @EnableAutoCo...read more

Streams in Java are sequences of elements that support functional-style operations.

• Streams are used to process collections of objects in a functional way.

• They allow for concise and readable code by enabling operations like filter, map, reduce, etc.

• Example: List names = Arrays.asList("Alice", "Bob", "Charlie"); Stream stream = names.stream();