In this blog post, we will discuss the top 15 features that come with Java 20.
Pattern Matching for instanceof: Java 20 introduces a new feature that allows developers to use pattern matching for the instanceof operator. This feature simplifies the code, making it more readable and easier to understand.
Switch Expressions: This feature allows developers to use switch expressions as a statement or an expression. It simplifies code and makes it more concise, making it easier to read and maintain.
Records: Records are a new kind of class introduced in Java 20 that provides a concise syntax for defining immutable data classes. They help reduce boilerplate code and make the code more readable and maintainable.
Text Blocks: Text Blocks are a new feature that allows developers to define multi-line strings without the need for escape characters. This feature simplifies the code, making it more readable and easier to understand.
ZGC: Z Garbage Collector is a new garbage collector introduced in Java 20 that promises low latency and high throughput. It provides efficient memory management, making Java applications more responsive and scalable.
Shenandoah GC: Shenandoah Garbage Collector is another new garbage collector introduced in Java 20 that promises low latency and high throughput. It provides efficient memory management, making Java applications more responsive and scalable
Helpful NullPointerExceptions: Java 20 comes with improved NullPointerException messages that provide more detailed information about the cause of the exception. This feature makes it easier to debug code and fix issues.
Removal of Deprecated APIs: Java 20 removes several deprecated APIs, which makes it easier for developers to maintain and upgrade their codebase.
JEP 358: Flight Recorder: Java 20 introduces a new feature called Flight Recorder, which provides a low-overhead way to collect data about a running Java application. It helps developers monitor and optimize the performance of their applications.
JEP 363: Remove the Concurrent Mark Sweep (CMS) Garbage Collector: Java 20 removes the Concurrent Mark Sweep (CMS) garbage collector, which has been deprecated since Java 9. It helps simplify the garbage collector landscape and improves the maintainability of the codebase.
JEP 371: Hidden Classes: Hidden Classes are a new kind of class introduced in Java 20 that provide a way to define classes that are not visible to other classes. This feature improves the security of the codebase, making it harder to access sensitive data.
JEP 372: Remove the Nashorn JavaScript Engine: Java 20 removes the Nashorn JavaScript engine, which has been deprecated since Java 11. It helps simplify the codebase and improves the maintainability of the platform.
JEP 374: Disable and Deprecate Biased Locking: Java 20 disables and deprecates Biased Locking, which has been in the platform since Java 6. It helps simplify the codebase and improve the maintainability of the platform.
JEP 376: ZGC on macOS: Java 20 brings support for ZGC on macOS, which makes it easier for developers to use the new garbage collector on their macOS machines.
JEP 377: ZGC on Windows: Java 20 brings support for ZGC on Windows, which makes it easier for developers to use the new garbage collector on their Windows machines.