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REPL: Java Developer’s New Friend

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One of the more interesting features of Java 9 is undoubtedly JShell, Java’s Read-Eval-Print-Loop implementation. REPL can be a valuable addition to your workflow and introduces patterns that will make you more effective when prototyping. This session shows you how to get started with JShell and shares a few tips and tricks that will make your life easier.

Devoxx US 2017

Published in: Software
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REPL: Java Developer’s New Friend

  1. 1. #DevoxxUS REPL: Java developer’s new friend Miro Cupak Senior Software Engineer, DNAstack 22/03/2017 @mirocupak#jshellintro
  2. 2. #DevoxxUS JShell • interactive tool to execute Java and get immediate results • JDK’s Read-Eval-Print-Loop • use cases: • learning • switching stacks • prototyping • investigating new APIs @mirocupak#jshellintro
  3. 3. #DevoxxUS More info • /help • API: import jdk.jshell.* • JEP 222: jshell: The Java Shell (Read-Eval-Print Loop) • http://openjdk.java.net/jeps/222 • Kulla • http://openjdk.java.net/projects/kulla/ • Robert Field: JShell: An Interactive Shell for the Java Platform • Thursday 12:00-12:50 PM (LL 20 D) @mirocupak#jshellintro
  4. 4. #DevoxxUS Questions? @mirocupak#jshellintro

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