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Question

這是我的java代碼

public class Account {
    private String accName;
    private String accId;
    private int balance;

    Account()
    {
        System.out.println("This is an empty constructor.");
    }

    Account(String name)
    {
        accName = name;
        System.out.println("This is an valued constructor.");
    }


    public class main{

        public Static void main(String[] args)
        {
            Account a1 = new Account("raff");
        }
    }
}

cmd 說 '"(identifier)" expected public Static void main(String[] args)'

我還是沒搞明白問題......

Answer 1

你有幾個問題：

• 公開課中的公開課
• main根本不應該是一個班級
• “靜態”， static關鍵字的拼寫錯誤

可能這就是你打算寫的：

public class Account {
    private String accName;
    private String accId;
    private int balance;

    Account() {
        System.out.println("This is an empty constructor.");
    }

    Account(String name) {
        accName = name;
        System.out.println("This is an valued constructor.");
    }

    public static void main(String[] args) {
        Account a1 = new Account("raff");
    }
}

Answer 2

static關鍵字與所有其他 Java 關鍵字一樣，應以小寫形式編寫：

public static void main(String[] args) {