Java 练习：我不确定自己做错了什么，感谢所有帮助

Question

我正在使用以下代码，并且不断收到此错误消息：错误：在团队团队中找不到主要方法，请将主要方法定义为：public static void main(String[] args)或者 JavaFX 应用程序类必须扩展 javafx.application.Application。欢迎所有建议、意见和更改，因为我完全不知道为什么这不起作用。提前非常感谢，我希望你们有一个美好的一天！

Game.java:

public class Game {

  private Team team1;
  private Team team2;
  private String time;

  public Game(Team t1, Team t2, String time) {
    super();

    this.team1 = team1;
    this.team2 = team2;
    this.time = time;
  }

  public String getTime() {
    return "TIME";
  }

}


Team.java:

public class Team {

  private String name;
  private String sport;
  private String mascot;
  public final static String MOTTO = "Sportsmanship!";

  public Team(String name, String sport, String mascot) {
    this.name = name;
    this.sport = sport;
    this.mascot = mascot;
  }

  //method to set the school name
  public String getName() {
    return name;
  }

  //method to set the sport name
  public String getSport() {
    return sport;
  }

  //method to set the team name
  public String getMascot() {
    return mascot;
  }
}


TestGame.java:

public class TestGame {

  public static void main(String[] args) {
    Team team1 = new Team("Roosevelt High", "Girls Basketball", "Dolphins");
    Team team2 = new Team("Hoover High", "Girls Basketball", "Tigers");
    Game game1 = new Game(team1, team2, "7 PM");

    System.out.println("The game between " + team1.getName() + " " + team1.getSport() +
        " " + team1.getMascot());
    System.out.println("   and " + team2.getName() + " " + team2.getSport() +
        " " + team2.getMascot());
    System.out.println("   takes place at " + game1.getTime());
  }
}


TestTeam.java:

public class TestTeam {

  public static void main(String[] args) {
    Team team1 = new Team("Roosevelt High", "Girls Basketball", "Dolphins");
    Team team2 = new Team("Hoover High", "Boys Wrestling", "Tigers");
    Team team3 = new Team("Lincoln High", "Girls Field Hockey", "Gators");
    display(team1);
    display(team2);
    display(team3);
  }

  public static void display(Team team) {
    System.out.println(
        team.getName() + "" + team.getSport() + "" + team.getMascot() + ""
            + Team.MOTTO);
  }
}

Answer 1

1. 您的 Game.java 类不完整，它没有getTime 方法。还有一些大括号被遗漏了。请完成。
2. 您的 TestGame 类也没有 t1、t2 和 g 变量。它有team1、team2 和game。也解决这个问题。
3. display 方法中有错误。你在这里只传递了一个Team t，但在这个方法中你试图从一些team1、team2、team3变量中打印数据。它们只是不存在于那个范围内。
4. 在 display 方法中，您试图获取静态类变量 vie 实例。没有任何意义。

这是一个工作代码示例。

Game.java：

public class Game {

  private Team team1;
  private Team team2;
  private String time;

  public Game(Team t1, Team t2, String time) {
    super();

    this.team1 = team1;
    this.team2 = team2;
    this.time = time;
  }

  public String getTime() {
    return "TIME";
  }

}

团队.java：

public class Team {

  private String name;
  private String sport;
  private String mascot;
  public final static String MOTTO = "Sportsmanship!";

  public Team(String name, String sport, String mascot) {
    this.name = name;
    this.sport = sport;
    this.mascot = mascot;
  }

  //method to set the school name
  public String getName() {
    return name;
  }

  //method to set the sport name
  public String getSport() {
    return sport;
  }

  //method to set the team name
  public String getMascot() {
    return mascot;
  }
}

TestGame.java：

public class TestGame {

  public static void main(String[] args) {
    Team team1 = new Team("Roosevelt High", "Girls Basketball", "Dolphins");
    Team team2 = new Team("Hoover High", "Girls Basketball", "Tigers");
    Game game1 = new Game(team1, team2, "7 PM");

    System.out.println("The game between " + team1.getName() + " " + team1.getSport() +
        " " + team1.getMascot());
    System.out.println("   and " + team2.getName() + " " + team2.getSport() +
        " " + team2.getMascot());
    System.out.println("   takes place at " + game1.getTime());
  }
}

TestTeam.java：

public class TestTeam {

  public static void main(String[] args) {
    Team team1 = new Team("Roosevelt High", "Girls Basketball", "Dolphins");
    Team team2 = new Team("Hoover High", "Boys Wrestling", "Tigers");
    Team team3 = new Team("Lincoln High", "Girls Field Hockey", "Gators");
    display(team1);
    display(team2);
    display(team3);
  }

  public static void display(Team team) {
    System.out.println(
        team.getName() + "" + team.getSport() + "" + team.getMascot() + ""
            + Team.MOTTO);
  }
}