Quoted from vid1900:
As far as I can tell, Java is only used to install malware on computers .
This is ridiculous advise that no one should follow. Every single trading institution, bank, and most governmental municipalities use Java applets on their pages as do tons of cots software. What you need to be cognizant of is WHAT site you are on and whether or not the Java app is properly signed by which company and if the signing matches the company domain.
Sticking your head in the sand isn't a valid method of security. At all.
You might as well go remove:
Chrome plugin execution,
Firefox plugin execution,
Etc. as they all have identical if not more attack vectors.
Java at least provides not one, not two, but 3 confirmation requests before running an application and denies by default if the app isn't at least running a valid SSL certificate.
If you don't know what you are running, Java or not isn't going to fix that.