How to check for special character and number using regex?

Question

How do I check if the string contains only " 0 to 9" and other special character like + - * / ( ) { } [ ] in java?
i want to use regex to check this.

Answer 1

[^A-Za-z] if you want include all special characters and numbers
[!#$%^&*(),.?":{}|<>0-9] if you want specified special characters. for example this regexp does not contain @ or ¥.