Collection :-Map Interface

Adding Elements In to map

Map  is an interface you need to instantiate a concrete implementation of the interface in order to retrive  element.

import java.util.HashMap;
import java.util.Map;
 

public class HashMapExample {
    
    }
 
    public static void main(String[] args) {
        //create an instance of HashMap to Store Phone Number
        Map exampleUserMap = new HashMap();
 
        //Populate example map with values
        exampleUserMap.put("mona", 4512147);
        exampleUserMap.put("sona", 54769);
        exampleUserMap.put("imran", 47147);
        exampleUserMap.put("irfan", 74444Aryantech Pune


8);
 
        for (Map.Entry entry : exampleUserMap.entrySet()) {
            System.out.println("Key = " + entry.getKey() + ", Value = " +
                               entry.getValue());
        }
    }
}

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