Here we can see the growth in jobs demand for these languages.
Java has had a rough time recently due to massive media outcry about security issues. Due to this more and more people are looking to re-code their system to another language.
However Android java has increased due to the fact that android phones are selling really well. (at least for samsung).
When it comes to web developement, I can code pretty good in PHP and ASP.NET/C#. I personally wish that ASP.NET/C# (Which is basically microsofts version of PHP) falls into a hole and die.
This is probably not becoming true tho because of microsofts advertisement budget and good student system.
I hate ASP.NET/C# because when I code in it, it feels like a framework designed to remove coding creativity and enforces using shitty drag and drop and visual implementation. It does not challenge or stimulate my brain at all.
(But hey, they screwd up XNA. Who knows what stupid decitions microsoft intend to do in the future).
I'm a bit sad of the reduction of PHP jobs, but this may just be because there are tons of people who learn PHP due to its many advantages, and thus the jobs available is lessen.
Also ruby is going strong, which may also be why PHP is reduced a bit. Many people started to get tired of PHP, but I hope a framework like Laravel will bring some fire back into the game, their MVC model is pretty similar.
Never tried or checked out objective C, but apparently its a bit interesting. I might check into it later.
SQL - welp. Everybody should know this in and out. The only people who offers dedicated SQL jobs are probably big companies that needs to fine-tune and maintain their databases in an extraordinary fashion.
C/C++ will probably still stay strong for quite a while unless Objective C is able to challenge them in terms of performance.
Heard about actionscript, didnt interest me, didnt even bother to check it out. Looks like I did the right decition in that.