I have this string ffff @fgggg @, How can I do substring last @, Thats mean When I am using this code:

String text =  `ffff @fgggg @`;
selectedUser = text.substring();

I expect selectedUser be == "";

I want to check text from last @ ? If after last @ be nothing, substring() method return "" ?

CodePudding user response：

try: selectedUser = text.split('@') is this what you mean?

CodePudding user response：

I found answer :

 selectedUser = text.substring(text.lastIndexOf('@')   1);

and I got "". It checked from last @.