I have a for loop, where i check if there is a certain key in a HashMap, if the key is not there, it should put a new association in the HashMap. The problem is that that it puts the association, but
I want to store 100 Million terms and their frequencies (in a text database ) into a HashMap <String, Double>. It is giving me \"Out of Memory\" Error. I tried to increase the heap-space to -Xmx
I just wondered if someone could give me some pointers (no pun intended) how to do this? I want to set aside 4GB of ram in order to map numbers to memory which saves me traversing a linked list check
I have defined a HashMap which uses a double type key and another HashMap as value as shown HashMap<Double, HashMap<Double, String>> HM1 = new HashMap<Double, HashMap<Double, String
Convert this Array: a = ["item 1", "item 2", "item 3", "item 4"]
I have hashmap that was created on a page using the struts2 <s:set> tag. It looks something like this
Since std::pair<std::string, unsigned i开发者_开发问答nt> is not defined for __gnu_cxx hash map, how do I create a __gnu_cxx hash map with keys of type std::pair<std::string, unsigned int>
I\'ve got a Map<String, Person> (actually I\'m using a more complex POJO but simplifying it for the sake of my question)
I put a key-value pair in a Java HashMap开发者_C百科 and converted it to a String using the toString() method.
I am trying to use a HashMap to map a unique string to a string ArrayList like this: HashMap<String, ArrayList<String>>
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