class Person {
    private String name;
    private int age;
    
    public Person(String name, int age) {
        this.name = name;
        this.age = age;
    }
    
    @Override
    public boolean equals(Object obj) {
        if (this == obj) return true;
        if (obj == null || getClass() != obj.getClass()) return false;
        Person person = (Person) obj;
        return age == person.age && name.equals(person.name);
    }
    
    @Override
    public int hashCode() {
        return Objects.hash(name, age);
    }
}

Person p1 = new Person("Анна", 30);
Person p2 = new Person("Анна", 30);
System.out.println(p1.equals(p2));  // true — содержимое совпадает