java - 使用正则表达式验证语句

Question

我编写了一个正则表达式来检查以下语句的有效性

String pattern= "^how many [r|R]upees is (([A-Za-z\\s])+)\\?$";

String statment1 = "HOW MANY RUPEES IS RED BLUE GOLD ?"; // all caps
String statment2 = "how many Rupees is red blue Gold?";
System.out.println(statment1.matches(pattern));
System.out.println(statment2.matches(pattern));

输出

false
true

如何验证语句是否全部都在大写字母范围内

Answer 1

只需在您的模式中添加 (?i) 不区分大小写的修饰符即可。

String pattern = "(?i)^how many rupees is ([a-z\\s]+)\\?$";