Specification for Java 7 is available on the Oracle site, but I can't find Java 8 specification anywhere, although downloads of beta versions of Java 8 are available on the internet.
Do you have an idea: is it already written and where can it be downloaded? If the specification isn't available, maybe another document which can act as (or come close to) the specification?
It describes all aspects of the language, including the semantics of all types, statements, and expressions, as well as threads and binary compatibility.
The Java® programming language is a general-purpose, concurrent, class-based, object-oriented language.
Technical definition: The JVM is the specification for a software program that executes code and provides the runtime environment for that code. Everyday definition: The JVM is how we run our Java programs. We configure the JVM's settings and then rely on it to manage program resources during execution.
The Java Language Specification (JLS) specifies the language; changes to the JLS are managed under JSR 901. Sun released JDK 1.1 on February 19, 1997.
Now that Java 8 is officially released, the Java Language and JVM specifications can be found on Oracle's website.
Update: thanks to @MadChuckle, link to final release.
According to the project's page, a public review will start in October 2013. In the meantime, you can follow the progress on the various mailing lists provided on that page or have a look at the early draft.
At this stage, the early draft mostly refers to individual sub-projects, so if you want to look at the changes brought by the lambdas for example, you would need to find that sub-project's documents which should indicate the impact on the JLS (not sure if that old draft is the latest - probably not).
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