Spring Framework 4.0 M1 & 3.2.3 available

Engineering | Juergen Hoeller | May 21, 2013 | ...

Dear Spring community,

It's my pleasure to announce the first milestone towards Spring Framework 4.0, delivering a first cut of our work on several key themes:

  • the first wave of Java SE 8 / OpenJDK 8 support (some details following below)
  • initial support for JMS 2.0, JPA 2.1, Bean Validation 1.1, and JSR-236 concurrency (from the EE 7 umbrella)
  • a first cut of our generalized condition mechanism for bean definitions (@Conditional along the lines of @Profile)
  • Spring's WebSocket endpoint model (which Rossen will be introducing in more detail soon)

With respect to Java SE 8, we support OpenJDK 8 build 88+ in several areas of the framework:

  • support for the 1.8 bytecode format in component scanning and subclass generation
  • lambda expressions and method references against Spring callback interfaces
  • JSR-310 Date-Time value types for Spring data binding and formatting
  • initial support for the JDK 8 parameter name discovery mechanism

Note: Spring's Java 8 support is a work in progress and tracking OpenJDK 8 snapshots on their way to the JDK 8 Developer Preview date in September (see http://openjdk.java.net/projects/jdk8/). We expect to release a corresponding Spring Framework 4.0 release candidate around that time, to be presented at SpringOne (September 9-12; see http://springone2gx.com).

Along with 4.0 M1, we've released Spring Framework 3.2.3, containing fixes for recently reported issues but also coming with OpenJDK 8 runtime support. Spring Framework 3.2.x will support deployment on JDK 8 runtimes for applications compiled against JDK 7 (with -target 1.7) or earlier. Note that it won't support JDK 8's bytecode format (-target 1.8, as needed for lambdas); please upgrade to Spring Framework 4.0 for that purpose.

Enjoy your first experiences with Spring on OpenJDK 8, and let us know how it works for you!

Cheers, Juergen

Get the Spring newsletter

Stay connected with the Spring newsletter

Subscribe

Get ahead

VMware offers training and certification to turbo-charge your progress.

Learn more

Get support

Tanzu Spring offers support and binaries for OpenJDK™, Spring, and Apache Tomcat® in one simple subscription.

Learn more

Upcoming events

Check out all the upcoming events in the Spring community.

View all