If(able to help ==true)  please answer...

If u've read my problem below (linked list) maybe U can help me with this! I have done person register with Linked list. There are like 4 options:
1. New post
2. search
3. search and change
4. remove post
U can enter your name, adress and personal code number while making a new post, but when I've removed it ( l.list.remove(p);)and then search for it I get the error message "Exception in thread "main"....bla bla..". If I remove the object containing name, adress and personal code number in a linked list and I search for the object I get an error message... can I write with the "if", something like "if(p == null) System.out.println("Search gave 0 results"); " so that the error message is avoided?
my second prob is that if I have changed a post (object) and then search for it I get the same "Exception in thread..." error.... help!
please help me if U have any ideas!
thanks in advance

phil,
This is your 3rd post on the same issue, and each time there's very little information provided. Sure you have a final or something and this paper needs to be handed in tonight, but not providing enough information to aid responses doesn't help.
--A                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   

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