Java错误： 预期公共类[重复]

Question

这个问题在这里已有答案：

• Valid characters in a Java class name 8个答案

我刚刚开始学习Java，当尝试使用“Javac”编译下面的源代码时，我收到以下错误：

“C：\ Java> javac 99Bottles.java

99Bottles.java:1：错误：预期

public class 99Bottles {// open Class“99Bottles”

似乎无法弄清楚这是一个语法错误还是我错过了什么？任何建议将不胜感激，谢谢

 public class 99Bottles { //open Class "99Bottles"
    public static void main (String[] args) { //Open main method
        int Beernum = 99; //delcate intergar called "Beernum" with value of 99
        String word = "bottles"; //delcare the string "word" with a value of "bottles"

        System.out.println(Beernum + " " + word + "of beer on the walL");  //prints
        System.out.println(Beernum + " " + word + "of beer"); //prints
        System.out.println("you take one down"); //prints
        System.out.println("you pass it around"); //prints

        Beernum = Beernum - 1; //subtract 1 from the value of "Beernum"

        if (Beernum > 0) { //Check if Beernum is greater than 0
                System.out.println(Beernum + " " + "of beer on the wall"); //prints
        } else { //if the if statement is not true run this
                System.out.println("no more bottles of beer on the wall"); //prints
            }        

    }
}

Answer 1

标识符是无限长度的Java字母和Java数字序列，第一个必须是Java字母。

类名是标识符。