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JDK13-java-se-language-updates.pdf
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JDK13-java-se-language-updates
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Java Platform, Standard Edition
Java Language Updates
Release 13
F18344-01
September 2019
Java Platform, Standard Edition Java Language Updates, Release 13
F18344-01
Copyright © 2017, 2019, Oracle and/or its affiliates. All rights reserved.
This software and related documentation are provided under a license agreement containing restrictions on
use and disclosure and are protected by intellectual property laws. Except as expressly permitted in your
license agreement or allowed by law, you may not use, copy, reproduce, translate, broadcast, modify,
license, transmit, distribute, exhibit, perform, publish, or display any part, in any form, or by any means.
Reverse engineering, disassembly, or decompilation of this software, unless required by law for
interoperability, is prohibited.
The information contained herein is subject to change without notice and is not warranted to be error-free. If
you find any errors, please report them to us in writing.
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Contents
Preface
Audience iv
Documentation Accessibility iv
Related Documents iv
Conventions iv
1
Java Language Changes
Java Language Changes for Java SE 13 1-1
Java Language Changes for Java SE 12 1-1
Java Language Changes for Java SE 11 1-1
Java Language Changes for Java SE 10 1-1
Java Language Changes for Java SE 9 1-1
2
Preview Features
3
Switch Expressions
4
Local Variable Type Inference
5
More Concise try-with-resources Statements
6
Small Language Changes in Java SE 9
iii
Preface
This guide describes the updated language features in Java SE 9 and subsequent
releases.
Audience
This document is for Java developers.
Documentation Accessibility
For information about Oracle's commitment to accessibility, visit the Oracle
Accessibility Program website at http://www.oracle.com/pls/topic/lookup?
ctx=acc&id=docacc.
Access to Oracle Support
Oracle customers that have purchased support have access to electronic support
through My Oracle Support. For information, visit http://www.oracle.com/pls/topic/
lookup?ctx=acc&id=info or visit http://www.oracle.com/pls/topic/lookup?ctx=acc&id=trs
if you are hearing impaired.
Related Documents
See JDK 13 Documentation.
Conventions
The following text conventions are used in this document:
Convention Meaning
boldface Boldface type indicates graphical user interface elements associated
with an action, or terms defined in text or the glossary.
italic Italic type indicates book titles, emphasis, or placeholder variables for
which you supply particular values.
monospace
Monospace type indicates commands within a paragraph, URLs, code
in examples, text that appears on the screen, or text that you enter.
Preface
iv
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