HashMap Example program for size()

/**
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());
}
 }

Output:

Size of HashMap :3

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