Java for the Palm T/X has been such an issue since Palm stopped hosting a copy, I have found and will host a copy of the installation in the form of WEME571.zip which contains the PRC files that constitute the Java JVM for the T/X. Just browse the folders in the ZIP and install the prc’s. This will then let you run java applets and programs such as Opera Mini 4.1

UPDATE: Some good instructions on Making Opera Mini 4.1 Broswer work for Palm OS