Why developers should get excited about Java 9
Java 9 is coming and at also brings many new and improved features along with it. Here is a reason look at all the shiny features of Java 9 which explains why developers should get excited about Java 9:
Modular source code.
JDK source code will be organized into modules, build system will get boosted to compile modules and module boundaries will be applied at build time. Moreover JPMS is now the biggest part of Java 9 with specific goals of Reliable Configuration and String Encapsulation.
Lightweight JSON API.
This feature is a great source of guesswork right now about how really useful it will be. This proposal is designed to provide the most commonly needed functionality and take advantage of Java 8/9 language and library features.
Process API updates.
Current API often forces developers to use native code. API updates will overcome this limitation by improving API for managing operating system processes. The new API, however, needs to account for operating system differences, especially on Windows.
Improve contended locking.
Core Java developers purpose to enhance the performance of contended Java object monitors in the next iteration of Java, as calculated by benchmarks and tests, including CallTimerGrid, among others.
Segmented code cache.
Java 9 aims to divide code cache into segments to facilitate extensions and for increasing performance between threads. Top-level types of compiled code include JVM internal code, profiled and non-profiled code, which would be separated.
Smart Java Compilation, Phase 2.
The Java 9 SDK includes an improved version of the Smart Java Compilation tool called sjavac; this enables improved JDK build speeds because this compiler would take advantage of all the cores in your system.
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