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JDT Core/Java8
This page summarizes the work that is being done to add Java™ 8 support into Eclipse.
Contents
- 1 Eclipse Support for Java 8 - Release Schedule
- 2 Java 8 features that are complete as of Early Access Release I and ready to be tested (save for some very minor defects)
- 3 What work is pending ? (out of date, will be updated Dec 20th 2013)
- 4 IMPORTANT NOTE
- 5 What to do to set up the IDE
- 6 Early access binaries
- 7 Disclaimer
Eclipse Support for Java 8 - Release Schedule
- Dec 20th 2013: Early Access Release II
- Expected features:
- Phase I Type inference support (details of what is known NOT to work will be provided shortly)
- Overload resolution for invocations involving poly expression arguments.
- Code Completion support for all of Java 8.
- Code navigation/selection (F3, hover) support for all of Java 8.
- Quick assist for migrating anonymous classes to lambda expressions.
- Syntactic error recovery for all Java 8 constructs.
- Search engine support for all Java 8 constructs.
- Partial support for debugging Java 8 code.
- Partial support for lambda serialization.
- Numerous bug fixes.
- Expected features:
- Jan 17th 2014: Early Access Release III - 60 day beta program starts.
- Targetted contents:
- JDT is feature complete with respect to Java 8.
- Known gaps in type inference addressed.
- Java 8 Debugging support fully in place.
- Lambda serialization support fully in place.
- Bug fixes.
- Targetted contents:
- Feb 17th 2014: Early Access Release IV: Project enters change control.
- Bug fixes
- Selected polish items
- Usability improvements
- Documentation updates.
- Feb 24th onwards: Weekly release candidates to be posted.
- March 18th: General availability release.
Java 8 features that are complete as of Early Access Release I and ready to be tested (save for some very minor defects)
- JSR 308 - Type Annotations
- Meta data enhancement specification:
- JEP120: Repeating annotations
- JEP118: Runtime access to parameter names
- JSR269 Enhancements for Pluggable Annotation Processor API and javax.lang.model APIs
- Formatter, Code completion, code navigation, search & indexing, Reconciler support for all the above
- Basic IDE enablement (AST APIs) for all of Java 8
- JSR308 type annotations based null analysis (substantially complete - some open issues exist)
- Default & static Methods in interfaces (part of JSR 335)
- JSR 335 features are substantially in place except in the areas of overload resolution and type inference.
What work is pending ? (out of date, will be updated Dec 20th 2013)
Updates are filed in the top level bug [380190 - Add support for Java SE 8]
JDT UI changes are tracked in JDT UI/Java8
| Lambda Expressions | Method references | Default Methods | Overload resolution | Type Inference | |
|---|---|---|---|---|---|
| Grammar / Parser | NA | NA | |||
| Compiler | |||||
| Reconciler | NA | NA | |||
| Syntax Error recovery | NA | NA | |||
| Class file generation | NA | NA | |||
| Search Engine (Manoj) | NA | NA | |||
| Code select (Anirban) | NA | NA | |||
| Code completion (Anirban) | NA | NA |
| Done | |
| Substantially complete, with open items | |
| In Progress | |
| |
Not Started yet |
| NA | Not Applicable |
IMPORTANT NOTE
- The following lines must be added in all headers of modified files for Java™ 8 implementation:
* This is an implementation of an early-draft specification developed under the Java * Community Process (JCP) and is made available for testing and evaluation purposes * only. The code is not compatible with any specification of the JCP. *
- Use the following @since tag on all newly added members: "3.9 BETA_JAVA8"
What to do to set up the IDE
- You need to install a JDK 8 build as an installed JRE in order to compile org.eclipse.jdt.annotation and run the tests using the JavaSE-1.8 Execution Environment.
- Use the exact name "JavaSE-1.8" for the JRE
- Checkout the BETA_JAVA8 branch of the following git repositories:
- JDT Core repository - git://git.eclipse.org/gitroot/jdt/eclipse.jdt.core.git
- JDT UI repository - git://git.eclipse.org/gitroot/jdt/eclipse.jdt.ui.git
- JDT Debug repository - git://git.eclipse.org/gitroot/jdt/eclipse.jdt.debug.git
- Equinox OSGi repository: git://git.eclipse.org/gitroot/equinox/rt.equinox.framework.git
- For tests:
- Releng repository - git://git.eclipse.org/gitroot/platform/eclipse.platform.releng.git
- Text repository - git://git.eclipse.org/gitroot/platform/eclipse.platform.text.git
- For more information on how to work with git repositories, look at http://wiki.eclipse.org/Platform-releng/Git_Workflows .
- Set R4.3.1 as Target Platform.
- Set R4.3.1 as API Baseline.
- If you are going to be running Ant builds (stand-alone or as project builders) using the 1.8 javac target, you should read the following wiki: Ant / Java 8.
Early access binaries
Please see JDT/Eclipse Java 8 Support (BETA) for details.
Disclaimer
This is a work in progress. The contents of the BETA_JAVA8 branch will be updated as the changes are made to the JSR Specification. Please use the early access builds only in a test/evaluation mode and not in the real development environment. If you need any help with this, please contact the JDT/Core team through either the forum or Bugzilla.