Question

我正试图让两支球队相互比赛。当我说team1.play（team2）时我称之为; 当我生成一个小于0.5的数字时，team2应该获胜，如果它大于0.5，那么第1队应该获胜。当1队获胜时，它会正确显示为尼克斯，但是当team2获胜时，它会显示内存地址。我如何能够正确地说网队赢了而不是球队@ 78987neu73

public class teams{
    public static void main(String [] argv){
        team team1 = new team("knicks");
        team team2 = new team("nets");
        team1.lose();
        team2.win();
        team2.lose();
        team2.printrecord();
        team1.play(team2);
    }//main
}//teams

class team{
    int wins; 
    int losses;
    String name;

    public team(String n){
        name = n;
        wins = losses = 0;
    }//constructor

    public void lose(){
        losses++;
    }//losses

    public void win(){
        wins++;
    }//wins

    public void printrecord(){
        System.out.println("W-L: " +wins+"-"+losses);
    }

    public void play(team j){
        if((Math.random())<0.5){
            System.out.println("The "+j+" Have Won!");
        }//if
        else 
            System.out.println("The "+name+" Have Won!");
    }

}

Answer 1

您的team班级

需要进行以下两项修改

public String getName() {
    return name;
}

public void play(team j){
    if((Math.random())<0.5){
        System.out.println("The "+j.getName()+" Have Won!");
    }//if
    else 
        System.out.println("The "+name+" Have Won!");
}

Answer 2

您已直接放置j。尝试使用以下代码

public void play(team j){
        if((Math.random())<0.5){
            System.out.println("The "+j.name+" Have Won!");
        }//if
        else 
            System.out.println("The "+this.name+" Have Won!");
    }

Answer 3

public void play(team j){
    if((Math.random())<0.5){
        System.out.println("The "+j+" Have Won!");
    }//if
    else 
        System.out.println("The "+name+" Have Won!");
}

在这里，“j”是一个对象，而不是一个字符串。使用j.name而不是j。

Answer 4

有很多方法可以解决您的问题，最简单的方法是直接获取j团队的名称：

if((Math.random())<0.5){
    System.out.println("The "+j.name+" Have Won!"); //You should use the name of the j team
}
else {
    System.out.println("The "+name+" Have Won!");
}

另一种方法是覆盖toString()类中的team方法。

public String toString() {
    return name;
}

如果您想更加先进并遵循行业标准，那么让我们正确构建您的team课程：

class Team { //class names are PascalCase

    private int wins; //encapsulate fields
    private int losses;
    private String name;

    //constructor
    public Team(String n) {
        name = n;
        wins = losses = 0;
    }

    //getter and setter methods
    public int getWins() {
        return wins;
    }

    public void setWins(int wins) {
        this.wins = wins;
    }

    public int getLosses() {
        return losses;
    }

    public void setLosses(int losses) {
        this.losses = losses;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }    

    public void lose() {
        setLosses(getLosses() + 1);
    }

    public void win() {
        setWins(getWins() + 1);
    }

    public void printrecord() {
        System.out.println("W-L: " + getWins() + "-" + getLosses());
    }

    public void play(Team otherTeam) { //more descriptive name
        if ((Math.random()) < 0.5) {
            System.out.println("The " + otherTeam.getName() + " Have Won!");
        }
        else {
            System.out.println("The " + this.getName() + " Have Won!");
        }
    }
}

Answer 5

在toString()中覆盖team，这是一个示例

@Override
public String toString(){
    return String.format("%s W-L: %d-%d",name, wins, losses);
}

这样play(team j)可以打印team j。此外，Java命名约定的类以大写字母开头。 team应为Team。

Answer 6

您需要做的就是覆盖您的团队类中的toString功能以返回名称...

只需在团队课程中添加此代码即可。

@Override
public String toString() {
    return name;
}

而不是返回类名，返回内存地址

6 个答案: