Let\'s say I instantiate a HashMap with SuperClass as value-type.I then add SubClass objects as values to the Map.When I retrieve those values from the Map, they are returned as objects of type SuperC
I have a HashMap mapping objects of my Context class to Integers. In the Context class, I did override the public int hashCode() and public boolean equals(Object c) of java.lang.Object. However, I hav
How can you shrink a LinkedHashMap? I overrode the removeEldestEntry method, but this method is only called once when a new value is inse开发者_如何学Pythonrted. So there is no change of making the ma
This may be difficult to explain, but here goes: I want to store 3 integers and a String to a Hashmap, so I can retrieve data from the map, but it turns out that hashmaps only allow 2 generic paramet
I need help to add the values from a String array into a HashMap. if (!loaded){ synchronized(syncLock){
I am developing a Spring Rest application. One of my methods is that: @RequestMapping(method = RequestMethod.GET)
I am building a item-item matrix and have the data in the following format UserX item1,item2,item3 userY item4,item5,item6
I was solving the Quora problem and for my particular solution I needed a hashtable (long-keys, int-values) for caching values. I hoped that the Java HashMap could be improved because I knew my data t
I have a hashmap: Map dateEvent = new HashMap(); where key is a date and time and value is a string. I fill collection with data where date开发者_开发百科 is in format dd.MM.yyyy HH:mm.
What I\'m trying to do right now within my app is modify the ImageDownloader class that Google put out last year in one of their tutorials that asynchronous开发者_开发百科ly downloads and caches image
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