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From: =?UTF-8?Q?Arne_Vajh=c3=b8j?= <arne@vajhoej.dk>
Newsgroups: comp.lang.java.programmer
Subject: Re: I don't remember JIT-ing for JDK 1.1 (Was: Translator, Compiler, Interpreter and Java)
Date: Fri, 2 Oct 2015 23:11:25 -0400
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On 10/2/2015 10:56 PM, Jan Burse wrote:
> Eternal Hope schrieb:
>> Of course what you need to understand is that Oracle are not in the same
>> fortunate position as we are here in c.l.j.p
>
> What bogs me a little bit that JIT-ing is described
> in connection with JDK 1.1. But history has it that
> it wasn't there at that time:
>
> Initially available as an add-on for Java 1.2,
> HotSpot became the default Sun JVM in Java 1.3.
> https://en.wikipedia.org/wiki/HotSpot
>
> Or can somebody of the genuises here highlight
> why Sun JIT-ing is mentioned for JDK 1.1 by Oracle?
> Was there some JIT-ing before HotSpot by Sun?
>
> Or was there a backport to some arcane
> JDK 1.1? Or is this just an annoucement which
> only materialized for JDK 1.2? Or should we
> just ingnore the reference to JDK 1.1?

There are plenty of references to JIT for Java 1.1
in old SUN docs.

https://singztechmusings.wordpress.com/2011/07/03/java-what-is-jit-compiler-and-how-does-it-work/

claims:

<quote>
The JIT compiler was first made available as a performance update in the 
Java Development Kit (JDK) 1.1.6 software release
</quote>

so maybe the Wikipedia article is not 100% correct!?!?

My guess is that the article is correct about when HotSpot was
released but wrong about it being the first JIT compiler
and SUN had an earlier SUN JIT compiler.

Arne