JAVA很难从对象调用方法。（初学者）

Question

我希望你身体好。 我是Java的初学者

我的问题是我无法从类猜游戏中找到方法talk()，我想知道为什么

这里是我调用方法talk()的类中的代码：

package guessGame;

public class GuessGame {
    
    void guessGameStarts(){
    System.out.println("    Welcome to a new party of GuessGame! \n We have 4 news cantidates for this session!\n");
    }
    
    Player player1 = new Player("Maurisse");
    Player player2 = new Player("Albert");
    Player player3 = new Player("Mathilde");
    Player player4 = new Player("Chloé");
    
    player1.talk();
}

这里是实现talk（）方法的类：

package guessGame;

public class Player {
    
    private String name;
    
    Player(String name) {
        this.name = name;
    }
    
    public void talk() {
        System.out.println("hi");
    }
}

Eclipse为player1.talk()行给出的错误是：标记“talk”上的语法错误，该标记后面应该是标识符

提前感谢您的帮助：）

Answer 1

问题是，您试图在加载类的上下文中执行代码。要做到这一点，必须使用static代码块。不过，这并不是你想要的解决方案。您可能希望该代码在guessGameStarts方法中执行：

public class GuessGame {
    
    void guessGameStarts() {
        System.out.println("    Welcome to a new party of GuessGame! \n We have 4 news cantidates for this session!\n");
    
    
        Player player1 = new Player("Maurisse");
        ...
    
        player1.talk();
    }
}

缩进代码对于提高可读性非常重要。如果您打算将代码放在guessGameStarts（这只是一个简单的打印语句）中，那么您会看到您的代码在这个方法之外

Answer 2

你的代码放错地方了。应该是这样的：

课堂猜谜游戏：

package guessGame;

public class GuessGame {

    void guessGameStarts(){
        System.out.println("    Welcome to a new party of GuessGame! \n We have 4 news cantidates for this session!\n");

        Player player1 = new Player("Maurisse");
        Player player2 = new Player("Albert");
        Player player3 = new Player("Mathilde");
        Player player4 = new Player("Chloé");
        player1.talk();
    }
}

职业球员：

package guessGame;

public class Player {
    private String name;
    Player(String name) {
        this.name = name;
    }
    public void talk() {
        System.out.println("hi");
    }
}