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555 Views 3 Replies Latest reply: Apr 11, 2006 8:19 AM by peptoabysmal
Java Virtual Machine
If these don't work you probably need to reinstall Java.G3 iMac 700MHz CD-RW, Mac OS X (10.4.5), CX4600, DX4900, SuperDisk, Road Runner Cable
Currently Being ModeratedMar 29, 2006 9:58 PM (in response to scapesuiter)Thanks for the links. I have been using several other Applets on the web that are supposed to report the java version or say hello world or whatever. They all work on my PC, but not the iMac.
I tried the Java embedding plugin from source forge, which contains some kind of MRJ library.
I have tried re-installing Java several times by downloading installers from Apple. Maybe I should look for the 1.3 installer?
The main reason I have this machine is to test compatibility with our sites that use Java applets and now I can't even get a simple hello world going. If I can't get it running soon, I'll have to nuke the hard drive and start over and be very careful about what updates and so forth I accept. I pretty much have been automatically accepting the Apple update software and everything was working until a couple of days ago. I think there was a security update or some such, but I don't really have any hard evidence as to what caused this.
I have the latest versions of all three browsers. This is OSX Tiger, the only "MRJ" installer I can find is the old OS 9 one.iMac G5, Mac OS X (10.4.5)
Currently Being ModeratedApr 11, 2006 8:19 AM (in response to peptoabysmal)I went through the steps of a clean install and checked that Java applets worked in Safari, Firefox and Netscape on Tiger (all the latest vrersions)
I did all of the Mac OSX updates and it turns out that the Java runtime parameter was causing the problem. One of our Java applets uses sometimes big images and I had the Xmx runtime parameter incorrectly entered. I had it as Xmx 256 and tried -Xmx 256, but it should be -Xmx262144. (1024 X 256) or -Xmx[bytes] (The default on Mac is 64 M)
At least according to this:
My guess is that the older version(s) of Java ignored or guessed at an improper runtime parameter, because it worked before.
Now it works with all the latest updates on all three browsers.iMac G5, Mac OS X (10.4.5)