The error Java update did not complete, Error Code 1618 prevents users from installing or updating Java on their system. Here is a working fix.

Java not working for some applications: Forcing 32-bit mode <p>We recently wrote about reinstalling Java to correct problems with various applications including Mail and Safari.

How do you run a JAR file on Windows, Mac or Linux? Double click the JAR? Run the JAR at the command line? Several approaches will work if you have Java or the JDK installed.