I have the Sun Certified Programmer for Java platform 1.4. I achieved it in 2006. Yeah, I know it is a very long time. I have done some minimal coding since but mostly Operational Technology stuff and control systems.
Is there a way to recertify or something? I am going back into IT and I want to get back to Java.
Yes, you can get the new certifications for Java 8 and/or for Java 11. But I am not sure if the benefit will justify the cost ($250+ for two exams) of taking the new exams for you, given that you are already certified. If you want to be current on the updates and really want to make sure that you know your stuff well, a cheaper and better alternative would be to take good quality mock exams. Attempt the mock exams as if you are taking a real exam.
Once you do the above, you may take the advanced level certification such as Java EE 7 Application Developer 1Z0-900. That will be more useful for you, IMHO.