这个正则表达式是什么意思 [A-Z0-9._%+-].. 你能帮我回答这个问题吗

Question

Pattern.compile("[A-Z0-9._%+-]") 它编译什么？？？

Answer 1

[A-Z0-9._%+-] match a single character present in the list below
A-Z a single character in the range between A and Z (case sensitive)
0-9 a single character in the range between 0 and 9
._%+- a single character in the list ._%+- literally

您可以使用以下网站来了解和测试正则表达式： https ://regex101.com/