So I asked another related question here: java string hash function with avalanche effect, but I have a different, related question now.
I have a list of hashmap. One field is an Integer, and the other one is a Boolean which will tell me if that item is selected or not.
Is there any way to retreive the keys of a hashmap other then using keyset? I have written the following code , I have a hashmap named map, it includes integer keys and double values :
Greetings! I have an issue here that i can\'t find. I am getting a NullPointerException at sets.put( nodes_iter.next(), null ); in the end of my DisjSet class code.
How can i tell how much space a pre-sized HashMap takes up before any elements are added?For example how do i determine how much memory the following takes up?
How can I create and fetch associative arrays in Java like I can in PHP? For example: $arr[0][\'name\'] = \'demo\';
I am currently doing it like this.. but it gets actually stored as integer.. How can i do it? commandMap = new HashMap();
Anyone have any ideas on how to do this? 开发者_StackOverflowI am new and need to know how to implement this assignment. Really need advice on starting out with this project, thanks.
In my activity I want to use the \'onRetainNonConfigurationIns开发者_StackOverflowtance\' method to store some of the data I\'ve loaded in the activity (no views). This should speed up loading and kee
The following subroutine is used to iterate over an array of Nodes (each with a continent in its hash) and return a list of all the countries:
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