Hash, LinkedHash & Tree Map , Map Interface

/*Sorted Map, the sort interface in java*/
/*REMEMBER : ALL THE COLLECTIONS, THAT IS ONLY COLLECTION CLASSES, ARE
ORGANIZED
* THOUGH INTERFACES. MAIN THREE COLLECTION CLASSES ARE: Lists, Map and
Set interface*/*Hash Map doesn't keep our keys in any type of order, and
if we want to
* keey keys in order we have two choices use 1) Linked Hash Map and 2)
Tree Map*//*Linked hash map is basically same as hash map except the
fact that it has double
* linked list connecting the hash maps. That means your keys and values
stay
* in the same order as you add them to the map.*//*Tree is basic
structures in computing and tree sorts the value that you add to it
* usually in natural order ( natural orders for int is 1 2 3 4 5 ..) ,
we will
* study more in future. */ /*Since they are using map interface you can
pass them in a method by using map
* interface like this:*/