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Explain Java 9 Features In Detail

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By Author: Individual
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Let us see about Java 9 released in 2017. Here are few features of Java 9. For more information join the Java certification course in Pune to make your career in this field.

1) JAVA 9 REPL (JSHELL)

A new tool called jshell introduced by Oracle Corp means Java Shell and also called REPL (Read Evaluate Print Loop). For executing and testing any Java constructs like class interface, enum, statements, objects, etc. easily it is used.

2) IMMUTABLE LIST, SET, MAP and MAP.Entry factory methods.
For creating immutable list, set, map and map.entry objects, Oracle Corp has introduced some convenient factory methods. For creating non-empty or empty collection objects utility methods are used.
3) PRIVATE METHODS IN INTERFACES
You can offer method implementation in interface using Default and static methods in Java 8. In interfaces there cannot be any creation of private methods. For ignoring redundant code and re-usability, and introducing Oracle Corp private methods in Java SE 9 interfaces. Private and static methods can be written from Java SE 9 on wards in an interface using private keyword.

4) ...
... JAVA 9 MODULE SYSTEM
Java 9 feature or one of the big changes is the Module system. Oracle Corp is featuring the following features as part of Jigsaw Project.
Modular JDK
Modular Java Source Code
Modular Run-time Images
Encapsulate Java Internal APIs
Java Platform Module System
5) PROCESS API IMPROVEMENTS
With some improvements in Process API, Java 9 has arrived. New couple classes and methods for easing the managing and controlling of OS processes are added.
New interfcase in Process API are:
java.lang.ProcessHandle
java.lang.ProcessHandle.Info
6) TRY WITH RESOURCES ENHANCEMENT
A new exception has been introduced by handling construct: Automatic resource management, try with resources. Automatic Better Resource Management is the main goal of this new statement. For offering some enhancements Java SE 9 states to ignore some more verbosity and improvement some Readability.
7) COMPLETABLEFUTURE API IMPROVEMENTS
For enhancing Completable Future, Oracle Corp solves some problems raised in Java SE 8. Here are few delays added along with timeouts, utility methods and better sub-classing. Thus our Java Classes in Pune over has been completed.

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