一个简单的字符串分割

 

用来解释图书编码的含义

public String Location(String book_id) {
String[] parts = book_id.split("-");
if (parts.length < 3) {
throw new IllegalArgumentException("Invalid book_id format");
}
StringBuilder location = new StringBuilder();
location.append(parts[0]).append("借阅室");
location.append(parts[1]).append("号柜");
location.append(parts[2]).append("层");
return location.toString();
}