java-21

Java 21 records provide a concise syntax for creating immutable data carriers. You define a record with its components, and the compiler automatically generates constructors, accessors, and equality methods for safer, more maintainable code.

Sealed types in Java 21 are used to model closed hierarchies, allowing switch pattern matching to verify exhaustiveness at compile time. This ensures all possible subtypes are handled safely without requiring default cases.

Virtual threads are the best way to handle high-throughput, non-blocking I/O concurrency in Java 21. They allow you to process massive numbers of concurrent requests without the overhead and complexity of traditional thread pools.

Yes, you can use Java 21 virtual threads for building microservices. They are specifically designed for efficient concurrency, allowing your microservice to handle incoming API requests with high throughput and non-blocking I/O operations.

Java 21 records differ from traditional data classes by providing built-in immutability and concise syntax. They automatically generate constructor, accessor, and equality methods, making them ideal for safe and maintainable Data Transfer Objects.

Java 21 pattern matching needs sealed interfaces to guarantee exhaustiveness because sealed types restrict which classes can implement them. This allows the compiler to verify that all possible cases are covered in a switch statement.