Implement Hibernate Validator ( @NotNull , @Size , @Email ) to ensure incoming client data is clean before processing. 6. Advanced Backend Concepts
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For stateless, secure token-based authentication.
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Reliable code requires automated test suites. GFG provides comprehensive coverage of Java testing frameworks:
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The Ultimate Guide to GeeksforGeeks JAVA Backend Development For stateless, secure token-based authentication
Inheritance, Polymorphism, Encapsulation, and Abstraction.
GFG explains the practical differences between Setter Injection and Constructor Injection using annotations like @Component , @Service , @Repository , and @Autowired .
Understand HTTP methods ( GET , POST , PUT , DELETE ), status codes ( 200 OK , 400 Bad Request , 404 Not Found , 500 Internal Server Error ), and statelessness.
Backend development is the backbone of modern software architecture. It powers the logic, databases, and server configurations that keep applications running smoothly. Among the various technologies available, Java remains a dominant force for enterprise-level backend development due to its scalability, security, and robust ecosystem.