Can you explain the concept of greedy resource loading approach and its application?

Eager loading refers to the approach where all necessary data or objects are loaded upfront, at the time of initialization, rather than on demand. In Java, this is often used, for example, when working with ORM (Hibernate, JPA), where related entities are loaded together with the main entity to avoid additional database queries later.

Example: if you have a User object with a collection of orders, eager loading will load all of the user's orders immediately along with the user, reducing the number of queries but potentially increasing initial load time and memory consumption.

@Entity
public class User {
    @OneToMany(fetch = FetchType.EAGER)
    private Set<Order> orders;
}

Eager loading is useful when you know for sure that the data will be needed immediately and you want to optimize performance by reducing the number of data source accesses.