Why "t" letter is written in small while writing 'Hashtable' syntax name?

Question

Why "t" letter is written in small while writing 'Hashtable' syntax name. why "t" is not a capital tetter like "M" in HashMap & "S" in HashSet?

I doubt anybody, other than the original designers of the API could seriously answer that questions. May be the developer whose task it was to write `Hashtable` had a broken `t` key...? — MadProgrammer, Aug 04 '14 at 07:36
Hashtable and Vector predate the standardized Collections API. And, because it is. — Elliott Frisch, Aug 04 '14 at 07:36

Subhrajyoti Majumder · Answer 1 · 2014-08-04T07:42:06.257

3

HashMap, TreeMap are implementation of Map interface, so Hash-Map and Tree-Map as HashSet & TreeSet are implemenataion of Set interface.

But Hashtable is not implementation of Table. Hashtable is in java since jdk1.0 and it was -

public class Hashtable extends Dictionary implements Cloneable, Serializable{
}

edited Aug 04 '14 at 07:42

answered Aug 04 '14 at 07:36

Ruchira Gayan Ranaweera · Answer 2 · 2014-08-04T08:32:04.750

1

Take a look at how class name define in Hashtable in Java

public class Hashtable<K,V>
extends Dictionary<K,V>
implements Map<K,V>, Cloneable, java.io.Serializable {}

This is not really a question I think, By design they name their class as Hashtable.

This may did intentionally, since Map and Set are interfaces. Table is not.

Map is a interface while HashMap is a implementation of it.

Set is a interface while TreeSet is a implementation of it.

But

There is not interface call Table only a class Hashtable

edited Aug 04 '14 at 08:32

answered Aug 04 '14 at 07:36

`Hashtable` is wrongly spelt twice (as `Hashtabel`) – DavidPostill Aug 04 '14 at 08:30

score 1 · Answer 3 · answered Aug 04 '14 at 07:38

1

Since Map and Set are interfaces and hence HashMap and HashSet have capitals... and there is no such collection interface named Table as such..

answered Aug 04 '14 at 07:38

dddkk

3 Answers3