Excel sheet values as Inputs

Hi all,
I am very very new to Java and especially Swings. I am trying to develop a GUI application which takes inputs from the values present in an Excel sheet column and populate it in a ListBox. I want my application to function something like the 'Filter' option in the MS Excel.
For e.g.
The Excel sheet columns should be like the foll;
Designation Name
Manager John
Officer Smith
Clerk Dude
Manager Smithson
Clerk Johnson
Staff Mark
All the end user should do is to enter the path of the excel sheet and the 2 ListBoxes on the GUI should get populated with the data in the respective
columns, shown above. If I select "Manager" in my first ListBox automatically in the second ListBox, the values "John" and "Smithson" should get populated. Can this be done in Swings using Java?
If I have posted the question in the wrong forum, please guide me to the right location to post this.
Thanks in advance,

NewToNetNeans wrote:
Well, to open and read any type of file should i go through the I/O streams of Java? Well, you can open any type of file in Java, but that's a far thing from being able to understand the contents of the file. That's where other tools come in.
But how to populate this in a comboBox or ListBox?Don't think of it as directly tying some arbitrary format input file to a ListBox. Think about two steps:
1) Reading a file and getting some kind of data structure (or, better yet, object set) that exposes the data and the characteristics of the data and if possible the business logic that uses the data.
2) Writing a GUI that uses that data or object set.
Any given program can do neither, one, or both of those steps.

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