hashTable restructuring

[.paul.]

i have a hashTable<Integer, noteHeader>

the noteHeader class is:

public class noteHeader {
    public String displayText;  
    public String noteText;  
    
    public noteHeader(String text1, String text2){
        this.displayText = text1;
        this.noteText = text2;
    }
}

the keys are sequential numbers.
my question is, when i remove an item, how can i modify all of the keys after the removed item so the hashTable keys are still sequential numbers?

[Fubarable]

You shouldn't modify the keys of a HashMap or a HashTable.

[.paul.]

it's the only way. i need to remove an element from the hashTable when a jList item is removed. the keys correspond to the jList list indices + not modifying the hashTable is not an option.

[Fubarable]

it's the only way. i need to remove an element from the hashTable when a jList item is removed. the keys correspond to the jList list indices + not modifying the hashTable is not an option.

It's always an option, and you've yet to convince me otherwise yet (I'm stubborn). Why are you using a HashTable to begin with since this has been largely superseded by HashMap? Why not simply an ArrayList if you need the indices to re-align so that it remains monotonically increasing and without gaps?

[doWhile]

Why are you using a HashTable / Map at all? Why not a List?

[.paul.]

Why are you using a HashTable to begin with since this has been largely superseded by HashMap?

i'm new to java + the internet can be a misleading place.

Why not simply an ArrayList if you need the indices to re-align so that it remains monotonically increasing and without gaps?

thankyou.