java+collections+guides+mcq

2025-05-04 21:55:51

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Java's Object Methods: hashCode()

public class Main { public static void main(String[] args) { Map<Person, String> peopleMap = new HashMap<>(); Person me = new Person("Adam", "McQuistan", LocalDate.parse("1987-09-23")); Person me2 = new Person("Adam", "McQuistan", LocalDate.parse("1987-09-23")); Person...
Java's Object Methods: equals(Object)

import java.time.LocalDate; public class Main { public static void main(String[] args) { Person me = new Person("Adam", "McQuistan", LocalDate.parse("1987-09-23")); Person me2 = new Person("Adam", "McQuistan", LocalDate.parse("1987-09-23")); if (me != me2) System.out....