Java 14 is one of the non-LTS (Long-Term Support) versions of the Java programming language and platform. Non-LTS versions are typically supported for six months and are intended for developers who want to take advantage of the latest features and enhancements introduced in Java.

Here are some key features and changes introduced in Java 14:

1. Records: Java 14 introduced the concept of records, which is a new class type primarily used for modeling data with a fixed set of fields. Records simplify the creation of classes for data storage and reduce the need for boilerplate code, such as constructors, getters, and equals/hashCode methods.

2. Pattern Matching for instanceof: This feature simplifies the code for type checking and casting by allowing developers to combine the instanceof operator with conditional extraction of values from objects.

3. Switch Expressions (Standard): In Java 14, the preview feature of switch expressions, introduced in Java 12 and enhanced in Java 13, became a standard feature. It allows the use of switch expressions as a more concise and expressive alternative to traditional switch statements.

4. Text Blocks: Text blocks are a feature that simplifies the formatting and representation of multi-line strings in Java. They allow developers to write multi-line strings in a more readable and natural way.

5. Foreign Function & Memory API (Incubator): Java 14 introduced an incubator module for the Foreign Function & Memory API. This feature provides a way to interact with native code and memory in a more controlled and safer manner.

6. Deprecations and Removals: Java 14 marked certain APIs and features as deprecated, indicating that they may be removed in future versions of Java. Developers are encouraged to review the deprecation warnings and update their code accordingly.

7. Performance Improvements: Like other Java releases, Java 14 included various performance enhancements, bug fixes, and optimizations to improve the overall performance and stability of the platform.

8. Updates and Bug Fixes: Java 14 addressed various issues and bugs reported in earlier versions of the platform, enhancing its reliability.

It’s important to note that non-LTS versions of Java are typically not recommended for production use in long-lived applications. Instead, LTS versions (e.g., Java 8, Java 11, Java 17) are recommended for applications that require long-term support and stability.

Developers who want to experiment with the latest language features and improvements can use non-LTS versions like Java 14 for development and testing. However, for production applications, it’s advisable to use an LTS version or consider upgrading to the latest LTS release for long-term support and stability.