Introduction to Programming

Class java.util.Objects

The class Objects has only 17 methods—all static. We have already used some of them in the previous chapter when we implemented the class Person:

class Person implements Comparable<Person> {    private int age;    private String name;    public Person(int age, String name) {        this.age = age;        this.name = name == null ? "" : name;    }    public int getAge(){ return this.age; }    public String getName(){ return this.name; }    @Override    public int compareTo(Person p){        int result = this.name.compareTo(p.getName());        if (result != 0) {            return result;        }        return this.age - p.getAge();    }    @Override    public boolean equals(Object o) {        if (this == o) return true;        if (o == null) return false;        if(!(o instanceof Person)) return false;        Person person = (Person)o ...