然而，试图对对象列表进行排序：java:int不能被取消引用

所以我有一个对象 TeamStats。

我希望能够对 teamStats 列表进行排序，gamesWon但是，当我尝试实现如下所示的 compareTo 方法时，我收到错误消息：java: int cannot be dereferenced。

我不知道为什么会这样，因为我正在关注这个 ArrayList 排序教程，他们似乎没有同样的问题。

为什么我会收到此错误以及如何避免它？

package sample;

import java.util.Comparator;

public class TeamStats implements Comparator<TeamStats>  {

    int teamID;
    int gamesPlayed;
    int gamesWon;
    int setsWon;

    public TeamStats(int teamID, int gamesPlayed, int gamesWon, int setsWon) {
        this.teamID = teamID;
        this.gamesPlayed = gamesPlayed;
        this.gamesWon = gamesWon;
        this.setsWon = setsWon;
    }

    public int getTeamID() {
        return teamID;
    }

    public void setTeamID(int teamID) {
        this.teamID = teamID;
    }

    public int getGamesPlayed() {
        return gamesPlayed;
    }

    public void setGamesPlayed(int gamesPlayed) {
        this.gamesPlayed = gamesPlayed;
    }

    public int getGamesWon() {
        return gamesWon;
    }

    public void setGamesWon(int gamesWon) {
        this.gamesWon = gamesWon;
    }

    public int getSetsWon() {
        return setsWon;
    }

    public void setSetsWon(int setsWon) {
        this.setsWon = setsWon;
    }


    @Override
    public int compare(TeamStats o1, TeamStats o2) {
        return o2.getGamesWon().compareTo(o1.getGamesWon());
    }
}

回答

    @Override
    public int compare(TeamStats o1, TeamStats o2) {
        // Thanks to Hovercraft Full Of Eels!
        return Integer.compare(o1.getGamesWon(), o2.getGamesWon()); 
    }

回答

Comparator<TeamStats> comparator = Comparator.comparing(TeamStats::getGamesWon);