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我从一个learnjava应用程序（codemurai）将这段代码复制到eclipse中，但出现了错误。由于我对java不太熟悉，所以我不确定如何构造，所以我尝试了两种不同的方法。作为given:-

String name;
int weaponDamage;
int health;
double score;

Player codemurai = new Player();
codemurai.name = "Codemurai";
codemurai.weaponDamage = 100;
codemurai.health = 100;
codemurai.score = 1500;

我试过了way:-

public class Player {

public static void main(String[] args) {
    String name;
    int weaponDamage;
    int health;
    double score;

    Player codemurai = new Player();
    codemurai.name = "Codemurai";
    codemurai.weaponDamage = 100;
    codemurai.health = 100;
    codemurai.score = 1500;
}
}

并在最后一行获取“name cannot be resolved”。
然后我试着this:-

public class Player {
    String name;
    int weaponDamage;
    int health;
    double score;

    Player codemurai = new Player();
    codemurai.name = "Codemurai";
    codemurai.weaponDamage = 100;
    codemurai.health = 100;
    codemurai.score = 1500;

    public static void main(String[] args) {    
    }
}

并获取“variabledeclaratorid expected”。
我知道这段代码不会有任何输出，但是我如何使它无错误运行，这些错误到底意味着什么？