Why have you got so much code in the main method?
Why are you using option panes for keyboard input rather than a Scanner?
I presume you will have a List whose size is the same as one of the numbers you enter? Why can't you create an array that size?
Please explain how you are eliminating the players. If you are removing things from a LIst, that is much easier than removing things from an array. You would have to move all the following elements one place up and maybe null out the last element. Are you aware of the
System#arraycopy() method? There are also copying methods in the Arrays class.