Java 15 New Features & Performance Optimizations

Java 15 is a version of the Java language, released in September 2020. It includes several new features and improvements. Below are some of the key new features introduced in Java 15:

1. Hidden Classes: This feature allows developers to create invisible classes that cannot be accessed by reflection APIs or other classes. This can enhance the security and performance of applications.
2. Sealed Classes: This feature allows developers to limit the number of subclasses within a class hierarchy. This improves code security and maintainability.
3. Record Classes: This feature enables developers to create immutable data classes that automatically generate getter and equals methods. This enhances code readability and maintainability.
4. Text Blocks: This feature allows developers to create multi-line strings without the need for escape characters or string concatenation operators. This improves code readability and maintainability.
5. ZGC: This is a new garbage collector designed to improve the performance and scalability of Java applications. It can handle hundreds of megabytes of memory within milliseconds.
6. Shenandoah GC: This is another new garbage collector aimed at improving the scalability and responsiveness of Java applications. It can process hundreds of megabytes of memory in just a few milliseconds.
7. Unix-Domain Socket Channel: This feature allows Java applications to use Unix domain sockets for inter-process communication. This enhances application scalability and performance.