/** * @author lautturi.com * Java example: remove element from hashmap in java */ import java.util.*; public class Lautturi { public static void main(String[] args) { // Creating a HashMap HashMap<Integer, String> map = new HashMap<Integer, String>(); // Put elements in Map map.put(1, "Apple"); map.put(2, "Banana"); map.put(3, "Cherry"); map.put(4, "Orange"); map.put(5, "Lautturi"); // print the hashmap using for-each loop for (Map.Entry m : map.entrySet()) { System.out.println(m.getKey() + " " + m.getValue()); } // remove element associated with key 2 String value = map.remove(2); System.out.println("Removed value: " + value); for (Map.Entry m : map.entrySet()) { System.out.println(m.getKey() + " " + m.getValue()); } } }
output:
1 Apple 2 Banana 3 Cherry 4 Orange 5 Lautturi Removed value: Banana 1 Apple 3 Cherry 4 Orange 5 Lautturi