Map

Author: raheemadamboev

src/TheMap.java

@@ -0,0 +1,26 @@
+import data.PersonModel;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class TheMap {
+
+ public static void main(String[] args) {
+
+ Map<Integer, PersonModel> persons = new HashMap<>();
+
+ persons.put(1, new PersonModel("Survivor", 15));
+ persons.put(2, new PersonModel("Eye of the Tiger", 25));
+ persons.put(3, new PersonModel("Europe", 17));
+
+ System.out.println(persons);
+ System.out.println(persons.keySet());
+ System.out.println(persons.entrySet());
+
+ System.out.println(persons.containsKey(5));
+ System.out.println(persons.values());
+ System.out.println(persons.getOrDefault(5, new PersonModel("Dick", 12)));
+ System.out.println(persons.remove(3));
+ System.out.println(persons.size());
+ }
+}