[X4U] Java

[Al Grappone]

Have been getting alert that address could not open Java. It is not  
installed or turned off. I checked Apple updates and I am up to date.  
Java is installed. Where do I find the preferences for Java?

Al Grappone (88) USN Ret  20" iMac OS X 10.5.8  2. 1 GHz ,PPCG5.  1GB  
DDFR2 SDram memory, Mail 3.6,  iTunes9.2 iLife9 Quicken2007 16.0.0,  
Epson Perfection 2450 Photo Scanner, Canon iP5200 Photo  
Printer,Netgear Wireless-N router