Java base subfile program

Good Morning:

I am fairly (very very) new to Java. I have read book how to do and stuff.
Here is what I want to do:


                1) We have a PF with 3 fields. Field1 is the control data, 
field2 is
Before image and field3 is an after image of the physical file trigger.
                2) In Field1 we have the Physical file name for which the 
before and after
images are saved in field2 and field3.
                3) I want to write a JAVA program to display Field1. User 
selected the
record to view.
                4) I have to see which file this is and get the FFD of the 
file. Build 2
data structures of this FFD.
                5) Move the before image to one Data Structure and after image 
to another
Data structure.
                6) I move the data structure to a standard screen template 
(left side is
before and right side be after image).
                7) Display the standard screen template to the user.


Questions:

                Can the above be done in Java?. If yes, any sample codes 
available for
displaying data to the screen available?. Any help would be appreciated.


Once again I do not know much of Java at all. I am RPG and Cobol person.
Trying to learn Java now.


Thanks
GG