Question

《head first java》书中一道数啤酒瓶童谣的程序，求解释

最近在自学java，买了本《head first java》，其中有一条关于数啤酒瓶童谣的程序，编译了可以运行，可是不知到程序意义，很难理解，求高手解答，谢谢！

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public class BeerSong{
public static void main (String[] args){
int beernum = 99;
String word = "bottles";
while (beernum > 0){
if (beernum == 1){
word = "bottle";
}
System.out.println(beernum + " " + word + "of beer on the wall");
System.out.println(beernum + " " + word + "of beer.");
System.out.println("Take one down.");
System.out.println("pass it around.");
beernum = beernum - 1;
if (beernum > 0){
System.out.println(beernum + " " + worf + " of beer on the wall");
} else{
System.out.println("no more bottles of beer on the wall");
}
}
}
}

Answer 1

就是说，一共有99瓶酒，喝下一瓶输出 take one down，干掉了一个，
知道最后没有酒了，输出no more bottles of beer on the wall