Thanks philho.

the hashmap is not the problem, i can manage myself in that area,
the issue is the json strings into array or hashmap.

i need to iterate thru a json string and grab the keys and values,
usually people knows the key names in the json file, and fetch data thru them,

i know those key names in my files too, but they are very random,
i store the record id in the keyname because later i parse those files thru php into php associative array,

so i dont want something like:

{ parent: [ id:1, children: [ child: [id:1, age:10, height:150 ], child: [id:2, age:15, height:170 ] ] ] }

and then acess the values by parent->children->child->age or height

i need something like

{ 1: [ 1: [10,150 ], 2: [15,170 ]  ] }

and iterate thru the string and fetch the data, being:
parent  = 1
parent(1) = 1,2
parent(1).child(1) = 10,150
parent(1).child(2) = 15,170
parent(1).child(2).value(0) = 10
parent(1).child(2).value(1) = 150

and so on....

i need to be able to fetch the keyname, and then use them  to get the data.
i'm demonstrating with easy values like 1, 2,etc...
but in the real scenario they are something like, 234, 34, 67 for the key names (parents's id's), random and not sorted.

i read a topic where you said something about iterative aproach , regarding the parsing of json files

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