/** Author :candidjava.com Description: total number of keys in HashMap. */ import java.util.*; public class HashMapSize { public static void main(String arg[]) { HashMap<Integer, String> osHashMap = new HashMap<Integer, String>(); // Create object of hashmap osHashMap.put(new Integer(1), "ABC"); osHashMap.put(new Integer(2), "DEF"); osHashMap.put(new Integer(3), "GHI"); System.out.println("Size of HashMap :" + osHashMap.size()); } }
HashMap Example program for size()
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