Difference of HashMap in alt-rt.jar and rt.jar?

[Jan Burse]

Dear All,

What is the difference between HashMap in alt-rt.jar
and rt.jar. I think I see a considerable speed up
in one of my applications, what would be the explanation?

Bye

 

[Tom Anderson]

What is the difference between HashMap in alt-rt.jar and rt.jar. I think
I see a considerable speed up in one of my applications, what would be
the explanation?

I've never even heard of alt-rt.jar. What is that?

tom

 

[Arne Vajhøj]

I've never even heard of alt-rt.jar. What is that?

http://mail.openjdk.java.net/pipermail/hotspot-runtime-dev/2009-January/000400.html
http://www.oracle.com/technetwork/java/javase/tech/vmoptions-jsp-140102.html

Arne

 

[Arne Vajhøj]

What is the difference between HashMap in alt-rt.jar
and rt.jar. I think I see a considerable speed up
in one of my applications, what would be the explanation?

Grab a decompiler and look.

Arne

 

[Tom Anderson]

http://mail.openjdk.java.net/pipermail/hotspot-runtime-dev/2009-January/000400.html
http://www.oracle.com/technetwork/java/javase/tech/vmoptions-jsp-140102.html

Thanks. I'm still none the wiser as to what's inside this jar. It must be
in the OpenJDK repositories somewhere, but they're a nightmare to
navigate.

tom