Crown Solutions Senior Java Developer Interview Questions and Answers

Q1. What is java8 features
Ans. 
Java 8 introduced significant features like lambdas, streams, and new APIs, enhancing productivity and code readability.
• Lambda Expressions: Enable concise representation of functional interfaces. Example: (a, b) -> a + b.

• Streams API: Facilitates functional-style operations on collections. Example: list.stream().filter(x -> x > 10).collect(Collectors.toList()).

• Default Methods: Allow interfaces to have method im...read more
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Q2. Security provided to microservices
Ans. 
Microservices security involves authentication, authorization, encryption, and network security to protect services and data.
• Use OAuth 2.0 for secure authorization between services.

• Implement API Gateway to manage traffic and enforce security policies.

• Utilize HTTPS to encrypt data in transit.

• Apply service-to-service authentication using JWT tokens.

• Employ network segmentation to isolate microservices.
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Q1. What angular and model, decotor
Ans. 
Angular is a popular front-end framework for building web applications, while decorators are a design pattern used in Angular to add metadata to classes and their members.
• Angular is a front-end framework developed by Google for building web applications.

• Decorators in Angular are used to add metadata to classes and their members.

• Example: @Component decorator in Angular is used to define a component.
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Java base and springboot, hibernate