Activity › Forums › Salesforce® Discussions › How to check string contains only ASCII printable characters in Apex ? Salesforce® Discussions How to check string contains only ASCII printable characters in Apex ? Posted by Kirandeep on August 27, 2020 at 1:21 PM How to check string contains only ASCII printable characters in Apex ? Anuj replied 5 years, 9 months ago 2 Members · 1 Reply 1 Reply Anuj Member August 27, 2020 at 2:02 PM You can use this to check global static boolean isNumeric(String str) Log In to reply. Public All Members My Connections Only Me PublicAll MembersMy ConnectionsOnly Me Public All Members My Connections Only Me