haai
i have a project due for the 18th july and i have been at it for quite some time
it is an 'mark database' aimed at teachers to store marks and work out averages, its not much but i know im not an adept programmer

i have asked many people for help thus far and i thank them, but i still have a few things i need to do before it is complete.
so far it is able to store records in a text file, however i still don't know how to make it edit or delete entries.
so anyone with any help, it would be really appreciated
markdb on yousendit

What's it written in?

I have no idea how your text file is handled, but the easiest would be to read the entire file to memory, remove/edit the entries you don't want, and rewrite the entire file.

it's written in java
its a pretty simple application however i do not have the means to implement the editing of entries with a gui
in other words i just dont know how to do it in code

blood105, still need help ?

yes please, i would really appreciate it

1st off -> NO GUI!?!?

eish ...

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Record Selection
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Well you have to have a way of selecting what entry is to be edited or deleted.

The simplest, but very user-unfriendly way, would be to just ask what record number should be edited.

The user says they want to edit record # X.

Then you've selected your record - it's the Xth one in the file - easy

Slightly better way: Make it a Next/Previous type of thing. Select entry 1. If user wants Next - just go to entry 2, 3, 4... whatever. Remember to check if the record exists (no record #300, so can't go next @ record #299, and can't go previous @ #1)

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To Edit
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Just ask for every bit of information over. What's the new name, what's the new surname, what's the new mark... Messy but works.

Fancier would be to have a little menu asking "What do you want to change?" Then changing just that.
eg:
1: Change Name
2: Change Surname
3: Change Mark
4: Save Changes

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Modifying text file
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A text file is VERY hard to actually just 'edit', so the easiest is to read everything into memory, change it to whatever, and resave the whole file.

Another way to do it, would be to create a new file, entry by entry. So you create a new text file entry by entry, just changing the entries you want to as you go past them. Deleting an entry is just a matter of NOT writing it to the new text file then.

This post has been edited by PyroSA: Jul 14 2005, 11:18 AM