How is the “Own Side" of this many-to-many relationship determined?

I am trying to strengthen my understanding of the Owning-side concept. Could not get a clear picture from any question I found here. I mainly look at the Java EE JPA tutorial. They have the following database schema, where PLAYERthey TEAMare many-to-many

Also indicated

• A player can be on many teams.
• A team can have many players.
• Between PLAYERand TEAMthere is a relationship "many-to-many".

Pretty far ahead. But when it comes to the coding part, they make the TEAMowner of the relationship.

public class Team {
    private Collection<Player> players;

    @ManyToMany
    @JoinTable(
            name = "PERSITENCE_ROSTER_TEAM_PLAYER",
            joinColumns = @JoinColumn(name = "TEAM_ID", referencedColumnName = "ID"),
            inverseJoinColumns = @JoinColumn(name = "PLAYER_ID", referencedColumnName = "ID")
    )
    public Collection<Player> getPlayers() {
        return players;
    }
}

public class Player {
    private Collection<Team> teams;

    @ManyToMany(mappedBy = "players")
    public Collection<Team> getTeams() {
        return teams;
    }
}

Question (s)

I have no problem understanding the code. I can not process:

1. , TEAM -?

2. , PLAYER ?

.

", @JoinTable, TEAM PLAYER.

:

3. ? , , , , @JoinTable?