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Map stores data in the form of key/numeric pairs, and arrays are similar to indexes that exist in arrays, which are themselves objects.The interface of Mapmap---Implementation MapThe inner class of Map.entry--map, which describes the key/value pairs

Map stores data in the form of key/numeric pairs, and arrays are similar to indexes that exist in arrays, which are themselves objects.The interface of Mapmap---Implementation MapThe inner class of Map.entry--map, which describes the key/value pairs

Learn the basics of one of the most common collection types and how to optimize your map for data specific to your application. Related downloads:· Jack's HashMap test.· Oracle JDeveloperG The collection class in Java.util

The collection classes in Java. util contain some of the most common classes in Java. The most common collection classes are list and map. The specific implementation of list includes arraylist and vector, which are variable-size lists and are

Reprint Please specify the Source: http://blog.csdn.net/ns_code/article/details/36421085PrefaceThis article does not intend to perpetuate the previous few styles (add gaze to all the source code), because to understand the full source of TreeMap.

Map stores data in the form of key/numeric pairs, and arrays are similar to indexes that exist in arrays, which are themselves objects.The interface of Mapmap---Implementation MapThe inner class of Map.entry--map, which describes the key/value pairs

Map stores data in the form of key/numeric pairs, and arrays are similar to indexes that exist in arrays, which are themselves objects.The interface of Mapmap---Implementation MapThe inner class of Map.entry--map, which describes the key/value pairs

Map stores data in the form of key/numeric pairs, and arrays are similar to indexes that exist in arrays, which are themselves objects.The interface of Mapmap---Implementation MapThe inner class of Map.entry--map, which describes the key/value pairs

Reprinted from: http://blog.csdn.net/tomholmes7/article/details/2663379. Reprint please indicate the original author's addressMapMap stores data in the form of key/numeric pairs, and arrays are very similar to the indexes that exist in the array,

Map stores data in the form of key/value pairs. Similar to arrays, indexes in arrays are also objects. Map Interface Map --- implement Map Map. Entry -- Internal class of map, which describes the key/value pairs in map. Sortedmap --- extended map,