Java 9 – The Ninth Step for Java, Moving to a New Age Altogether (1)

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The Update

• Java 9, known as the Java Platform Standard
  Edition version 9 earlier arrives!
• The Java Development Kit (JDK) for the developers
  to download is available too!

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• This Christmas, a Toast for Java. Cheers to
  that!

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How it Began

• Java 9 turned into a long-term project, when
  Oracle first started mentoring this language
  taking over the Sun Microsystems way back in
  early 2010
• The very first task for Oracle, soon after the
  acquisition was to take stock of the situation
  within the code

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The Roadmap

• The proposed roadmap leading to Java 9, shared
  way back has more or less been adhered to and
  here we are today with Java 9

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• Strong Refreshing Java the Cup of Good
  Taste!

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The Top-Class Features with Java 9 for Custom
Java Development

• Java Standard Edition version 9 has been a major
  feature release for Java platform with various
  architectural and component level changes

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Modular Approached System (Jigsaw Project)

• This latest version of Java comes with segmented
  modules like the JDK, JRE, JAR and more for the
  developers to implement in accordance to the
  demand of the application
• Module system has the advantage of ease of
  testing, maintenance, etc. and restricts access
  to internal non-important APIs
• The modularity approach of Java 9 has application
  packaging, which makes smaller parts of the JDK
  and reorganizes the source code into modules
• JDK and JRE are enhanced to handle modules. Also
  the JavaFX UI and CSS API are a part of the
  module system approach

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Improvements in the Compiler for Java 9 code

• The complier for Java 9 has several enhancements
  but important among them is the Ahead-of-Time
  (AOT) Compilation
• It compiles the Java classes to native code
  before it is launched into the virtual machine
• Just-in-time (JIT) compilation has performance
  related issues when it comes to large sized
  application, AOT helps to address these issues
• Java-level JVM Compiler Interface (JVMCI) allows
  the compiler to be used as dynamic compiler by
  JVM
• Complier written in Java become easy to maintain
  and improve for Java application development
  services

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REPL in Java 9

• The read-eval-print loop (REPL) tool, which was a
  long term goal for Java, is now added in Java 9
• Javas REPL called jShell evaluates statements
  and expressions
• Developers get feedback about the program before
  compilation by entering certain commands
• The command-line tools capabilities involve tab
  completion and automatic addition of the terminal
  semi-colon wherever needed
• jShell API allows jShell functionality in the IDE
  and other tools

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Streams API in Java 9

• Stream in Java enables developers to express the
  calculation related expression in a way that
  allows data parallelism
• The Stream API adds methods that take and drop
  item conditionally from the Stream and iterate
  over the Stream elements, creating a Stream from
  nullable value along with expanding the Java SE
  API that also serve as Streams sources

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Code cache can be divided in Java 9

• In Java 9, the code cache can be divided thus
  improving the performance and allowing extension
  like fine-grained locking
• This results in improved sweep times, thus
  improving the execution time and giving a push to
  custom Java development

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Better JavaScript backing in Java 9

• A lightweight runtime Javascript is being
  improvised in JDK9 under the Project Nashorn
• This project aimed to implement efficient yet
  lightweight runtime Javascript
• Project Nashorn was charged for enabling embedded
  Javascript in the Java projects
• The API enables ECMA Script code analysis by IDEs
  and server-side frameworks without depending on
  the internal implementation classes

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HTTP/2 client API

• The beta version of HTTP/2 is a part of JDK 9
  which implements the upgrades in java to the
  webs core HTTP protocol
• HTTP/2 API can substitute the HttpURLConnection
  API, which had several issues if being designed
  with low-defunct protocols anteceding the HTTP/1

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Improved HTML5 and Unicode support in Java 9

• The JavaDoc tool has been enhanced to create
  HTML5 mark up
• The Unicode 8.0 encoding standard is also well
  supported providing 8,000 characters, 10 blocks
  and 6 scripts

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DTLS security API in Java 9

• From security perspective, the DTLS (Datagram
  Transport Layer Security) API has added into JDK
  9
• This protocol prevents message forgery,
  eavesdropping and tampering with the
  client-server interaction

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To Make a Long Story Short

• Java _at_ 20
• Maintains Its Supremacy in the Enterprise World

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Future Scope

• Java is now planned to have a 6-month release
  calendar the next major release being called Java
  18.3
• Followed by the next release Java 18.9 which will
  be 6 months later creating a lot of enthusiasm in
  enterprises offering Java application development
  services

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