Depending on your needs, this could be as simple as assigning a new value, or null, to an array element; or it might involve copying higher-number elements down to fill up a "hole" left by a deleted element. Can you describe your requirements in a bit more detail?
well it is like this that i want ot create an array of objects and store data in it. and after that i want to update that record and amle to delete it as well. this is my problem. i am able to add records but don't knoew to update or to delete it. if u can help me it will be a big help.