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Java 21 Coding Standards Interview Questions

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What are sealed classes in Java 21? How do you format a pattern-matching switch expression per Java 21 coding standards? What are the standard naming conventions for classes and interfaces in Java 21? Define var and explain the coding standard guidelines around its use in Java 21? List the common Javadoc conventions required in Java coding standards? What are the types of comments recommended in Java style guides? Explain the internal working of the Sequenced Collections API introduced in Java 21? What is a coding standard in Java, and why does it matter for Java 21 projects? What is the purpose of a static analysis tool like Checkstyle in a Java 21 codebase? What is a text block in Java 21? Describe the recommended package naming convention in Java style guides? Which is better and why: exceptions versus sealed result types for error handling? What is a record in Java 21, and why do coding standards recommend it for data carriers? What is the purpose of the @Override annotation in Java coding standards? How does the compiler enforce exhaustiveness in a switch over sealed types? Why should you avoid finalizers in favor of try-with-resources under Java 21 standards? How do you design a thread-safe class following Java 21 coding standards? When should you use module-info.java for encapsulation as per coding standards? What are the standard naming conventions for methods and variables in Java? What is the purpose of the final keyword in Java 21 coding standards?

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