使用正则表达式验证语句

Question

I have written a regular expression to check the validation for the below statements

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));

Output

false
true

How to validate if the statement if everything is under caps

Answer 1

只需在模式中添加(?i)不区分大小写的修饰符即可。

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

Answer 2

You can try to do this without regex by using the StringUtils isAllUpperCase

Checks if the CharSequence contains only uppercase characters.

!StringUtils.isAllUpperCase("HOW MANY RUPEES IS RED BLUE GOLD ?") = false
!StringUtils.isAllUpperCase("how many Rupees is red blue gold?") = true