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  1. import java.util.*;
  2.  
  3. class Hash_Map_Demo {
  4. 	public static void main(String[] args)
  5. 	{
  6.  
  7. 		// Creating an empty HashMap
  8. 		HashMap<Integer, String> hash_map = new HashMap<Integer, String>();
  9.  
  10. 		// Mapping string values to int keys
  11. 		hash_map.put(10, "Geeks");
  12. 		hash_map.put(15, "4");
  13. 		hash_map.put(20, "Geeks");
  14. 		hash_map.put(25, "Welcomes");
  15. 		hash_map.put(30, "You");
  16.  
  17. 		// Displaying the HashMap
  18. 		System.out.println("Initial Mappings are: " + hash_map);
  19.  
  20. 		// Getting the value of 25
  21. 		System.out.println("The Value is: " + hash_map.get(35));
  22.  
  23. 		// Getting the value of 10
  24. 		System.out.println("The Value is: " + hash_map.get(10));
  25. 	}
  26. }
Success #stdin #stdout 0.13s 40896KB
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Standard input is empty
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Initial Mappings are: {20=Geeks, 25=Welcomes, 10=Geeks, 30=You, 15=4}
The Value is: null
The Value is: Geeks
https://ideone.com/k3Bwnf
language:
Java (HotSpot 12)
created:
2 years ago
visibility:
public

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