java core

JEP 400 introduces UTF-8 as the default character encoding in Java 17. Previously, the default encoding depended on the operating system’s locale, which caused inconsistencies across different platforms. This enhancement ensures that Java applications behave consistently and reliably, especially when handling text data in various languages. Key Changes UTF-8 as Default: UTF-8 is now the […]

JEP 338: Unix-Domain Socket Channels was introduced in Java 17 to provide enhanced support for Unix-domain sockets (UDS) in the Java platform. This improvement enables developers to utilize the power and efficiency of Unix-domain sockets for inter-process communication (IPC) on Unix-based systems. Unix-domain sockets are a powerful communication mechanism that allows processes on the same

JEP 376: ZGC on macOS introduces the support for the Z Garbage Collector (ZGC) on macOS in Java 17, marking a significant milestone in the evolution of the ZGC as a low-latency garbage collector. Prior to this enhancement, ZGC was available on Linux platforms but not on macOS, limiting its use for macOS users. With

JEP 336: Deprecate the Security Manager for Removal introduces the deprecation of the Security Manager in Java 17, signaling its eventual removal in future versions of the JDK. The Security Manager was originally designed to enforce fine-grained security policies and restrict access to sensitive resources, but over time, its usage has significantly declined. This JEP

JEP 392: Packaging Tool is a significant enhancement introduced in Java 17 that provides a simpler, more streamlined way to package Java applications into platform-specific executables. This tool aims to ease the process of deploying Java applications by allowing developers to package their applications with native installers or executables, thereby eliminating the need for users

JEP 387 (Elastic Metaspace) was introduced in Java 17 to enhance the management of Metaspace, particularly in reducing the overall memory footprint for applications. Metaspace is an area of memory where class metadata is stored in Java. Unlike the Permanent Generation (used in older Java versions), Metaspace was introduced in Java 8 and stored class

The Vector API introduced as part of JEP 338 aims to provide a platform-independent API to express vector operations in Java. It was first incubated in Java 16 and enhanced in subsequent releases. This API allows developers to write high-performance vectorized code that can take advantage of SIMD (Single Instruction, Multiple Data) capabilities provided by

Java 16 introduced JEP 395: Records as an incubated feature, and with Java 17, this feature was standardized. Records provide a new way to model immutable data structures with less boilerplate code. They are a special type of class designed to hold data without needing the user to write code for typical methods such as

JEP 394: Pattern Matching for instanceof is a significant feature introduced in Java 16 and enhanced in Java 17. The goal of this enhancement is to simplify and improve the use of instanceof for type-checking and casting. Traditionally, the instanceof operator required a two-step process: first, checking if an object is an instance of a

Java 17 introduces an important update for macOS users with the new rendering pipeline based on Apple’s Metal framework. This change was made to replace the older OpenGL pipeline, which Apple has been deprecating over the years. The new pipeline improves performance and ensures better long-term compatibility with modern macOS systems. Why the Change? OpenGL