Tuesday Jan 06, 2015

Java Tutorials Sixth Edition Book Released!

The JDK documentation team is pleased to announce that The Java Tutorials Sixth Edition book is now available on Amazon in printed book and kindle formats.

This edition, based on Java SE 8, introduces the new features added to the platform, including lambda expressions, default methods, aggregate operations, and more. Expanded coverage includes a chapter on the Date-Time API and a new chapter on annotations, with sections on type annotations and pluggable type systems as well as repeating annotations. In addition, the updated sections “Security in Rich Internet Applications” and “Guidelines for Securing Rich Internet Applications” address key security topics.

If you plan to take one of the Java SE 8 certification exams, this book can help. A special appendix, “Preparing for Java Programming Language Certification,” details the items covered on the available exams. Check the Java Tutorials online for updates.


- Sowmya

Wednesday Oct 08, 2014

Java SE Documentation Survey 2014

The Java SE documentation team is conducting a brief survey at the following URL:

https://www.surveymonkey.com/s/java-se-documentation-survey-2014

Answering it will provide us with key insights into the kinds of developer documentation that you (our readers) are looking for. Thank you in advance. We value your input very much!

Thursday Oct 02, 2014

JavaOne 2014: Enhanced Metadata in Java SE 8

Wednesday at JavaOne, Joe Darcy and Alex Buckley of Oracle presented Enhanced Metadata in Java SE 8. This session described new features related to annotations and explained how to use annotations with custom type checkers to improve code quality.

For more information on this topic, see the Annotations lesson in the Java Tutorials.

JavaOne 2014: Packaging and Deploying Java Apps in Java 8u20

Today at JavaOne, Danno Ferrin of Oracle presents the session Packaging and Deploying Java Apps in Java 8u20. This session provides information about the new features for the Java Packager and shows you how to integrate them into your build chain.

For more information on this topic, see The Java Packager Tool and Packaging Basics in the Java Platform, Standard Edition Deployment Guide.

Tuesday Sep 30, 2014

Java 2014: Using Oracle Java Flight Recorder

Today, Marcus Hirt (Consulting Member of Technical Staff, Oracle) and Michael Avrahamov (Sr. Director of Software Development, Oracle) hosted the session Using Oracle Java Flight Recorder. Java Flight Recorder (JFR) is a tool for collecting diagnostic and profiling data about a running Java application. It is a feature of Oracle Java SE Advanced and Oracle Java SE Suite. The session showed how JFR works, different ways to control JFR, and examples of how to analyze recordings in different ways.

For more information, see Java SE Java Flight Recorder Runtime Guide.

JavaOne 2014: Using Type Annotations to Improve Code Quality

Today, Geertjan Wielenga (Principal Product Manager, Oracle) and Werner Dietl (Assistant Professor, University of Waterloo) hosted the session Using Type Annotations to Improve Code Quality. This session discussed how you can use type annotations to improve code quality through fine-grained documentation and support for pluggable type systems.

For more information, see Type Annotations and Pluggable Type Systems in the Java Tutorials.

JavaOne 2014: You’ve Got Your Streams on My Collections!

Today, Mike Duigou (Principal Member of Technical Staff, Oracle), Stuart Marks (Principal Member of Technical Staff, Oracle), and Paul Sandoz (Software Engineer, Oracle) hosted the community discussion You’ve Got Your Streams on My Collections! Topics discussed included the state of the Java Collection and Streams APIs and some of the best third-party libraries.

For more information about the Collections and Streams API, see Aggregate Operations and the Collections trail in the Java Tutorials.

JavaOne 2014: Understanding Java Garbage Collection

Today, Gil Tene, CTO, Azul Systems, presented the conference Understanding Java Garbage Collection. The conference classifies various garbage collection techniques currently available in JVMs such as generational, parallel, stop-the-world, incremental, and concurrent algorithms, and defines terms and metrics common to all collectors.

See the Java SE HotSpot Virtual Machine Garbage Collection Tuning Guide for more information.

Monday Sep 29, 2014

JavaOne 2014: Nashorn: JavaScript for the JVM

Today, Jim Laskey, multi-languages lead at Oracle, presented the conference Nashorn: JavaScript for the JVM. Nashorn is a JavaScript engine implemented fully in Java on the JVM.

For more information, see the Nashorn User's Guide.

JavaOne 2014: The Java Time API in Java SE 8

Monday, Roger Riggs of Oracle gave a presentation about The Java Time API in Java SE 8. This API was introduced in JDK 8 and makes it easier for developers to write date-and-time-based code.

For more information on this API, see the Date Time Trail in the Java Tutorials.

JavaOne 2014: Security with Java Deployment

Monday at JavaOne, David DeHaven and Chris Bensen of Oracle gave a presentation on Security with Java Deployment, which covers the changes that were made in the deployment security model over the past few years. Best practices were also discussed.

For additional information about the topics covered, see the following Java documentation:

JavaOne 2014: Lambda Expressions, Streams, and JDK 8 Enhancements to Collections

The following JavaOne presentations, scheduled for Monday, September 29, discuss lambda expressions, streams, and JDK 8 enhancements to collections:

For more information about these topics, see the following sections in the Java Tutorials:

Tuesday Jul 15, 2014

JDK 8u11 and JDK 7u65 released!

JDK 8u11 and JDK 7u65 are now available.

You can download the latest JDK releases from Java SE Downloads page.

For information on features included in this release, see JDK 8u11 Release Notes and 7u65 Release Notes.

Tuesday Apr 15, 2014

JDK 8u5 and JDK 7u55 Documentation Updates

The Java Development Kit 8 Update 5 (JDK 8u5) and JDK 7u55 releases are available and can be downloaded from the Java SE Downloads page. For information about these releases, see the JDK 8u5 Release Notes and the JDK 7u55 Release Notes.

JDK 8u5 and 7u55 enhancements include the following:

  • The frequency of some security dialogs has been reduced on systems that run the same Rich Internet Application (RIA) multiple times.
  • If a stand-alone asterisk (*) is specified as the value for the Caller-Allowable-Codebase attribute, then calls from JavaScript code to RIA will show a security warning, and users have the choice to allow the call or block the call. For more information, see JAR File Manifest Attributes for Security (or the JDK 7 version of this section).

Tuesday Mar 25, 2014

Learn More About Compact Profiles

Compact Profiles contain predefined subsets of the Java SE platform and enable applications that do not require the entire platform to be deployed and run on small devices. Developers can choose the appropriate profile based on the resources of the target hardware. The following profiles are available in Java SE 8:

  • compact1: Smallest set of API packages without omitting classes. Logging and SSL are included. See Profile compact1 for a list of the packages, classes, and interfaces that are included.

  • compact2: Includes everything in compact1 plus XML, JDBC and RMI. See Profile compact2 for a list of the packages, classes, and interfaces that are included.

  • compact3: Includes everything in compact2 plus management, naming, more security, and the compiler API. See Profile compact3 for a list of the packages, classes, and interfaces that are included.

For more information about compact profiles, see the following resources:

See What's New in JDK 8 for information about other new features in JDK 8.

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