Java Exercises

Java Collection, HashMap Exercises: Create a set view of the mappings contained in a map

Java Collection, HashMap Exercises: Exercise-9 with Solution

Write a Java program to create a set view of the mappings contained in a map.

Sample Solution:-

Java Code:

import java.util.*;  
public class Example9 {  
    public static void main(String args[]) {
  HashMap < Integer, String > hash_map = new HashMap < Integer, String > ();
  hash_map.put(1, "Red");
  hash_map.put(2, "Green");
  hash_map.put(3, "Black");
  hash_map.put(4, "White");
  hash_map.put(5, "Blue");
  // create set view for the map
  Set set = hash_map.entrySet();
  // check set values
  System.out.println("Set values: " + set);

Sample Output:

Set values: [1=Red, 2=Green, 3=Black, 4=White, 5=Blue]

Java Code Editor:

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