I just downloaded minecraft on my Windows 7 computer and when I double clicked on its execution, it said that I needed Java runtime environment 1.5.0. My question is, once I download Java, does the computer automatically know to run Java when I double click on minecraft. Or do I need to run Java then click on Minecraft. Sorry, quite new at this and a little confused. THANKS.
You probably don't have java installed at all if it said that. Go here to get Java 7.
Actually, you do need to install the old version for minecraft, it is specific. java in more recent or older versons than 1.5.0 will not help. i play mc and already have java before i played so i know this to be true since i got same message. in some cases there will be a bit of trouble finding a site that lets you download old java software, sometimes you wont. i hope this was helpful.
I'm having a problem similar to this. I have owned Minecraft for over a year and I got bored of it, so I decided to see what was so great about RuneScape (which I have discovered is absolutely sh*t) I needed Java, which I thought I had but there was an update, so I updated. Then, to my disappointment, it said I already had it. RuneScape didn't recognise this and was obviously wrong. I chose to delete Java and reinstall, but then it automatically closed, and now I can't access Minecraft. I tried reinstalling it, and it still says I already have it, but there is not proof of this in my files. Yes, I can see hidden files. I have Windows 7 on this computer and I use Google Chrome as my web browser if that helps too.