Java 错误：<标识符> 预期公共类

我刚刚开始学习 Java，在尝试使用“Javac”编译以下源代码时，出现以下错误：

"C:\Java>javac 99Bottles.java

99Bottles.java:1: 错误: 预期

public class 99Bottles { //打开类“99Bottles”

似乎无法弄清楚这是语法错误还是我遗漏了什么？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
            }        

    }
}