trigger AccountCreateTrigger on Account (before insert, before update) {
for (Account acc: Trigger.new)
     {Account [] accs = [SELECT Name FROM Account WHERE Name = :acc.Name LIMIT 1];
      if (accs.size() > 0 ) //if account already exists, block and show the information on the page
         {acc.addError('Account  \'' + accs[0].Name +  '\' already exists. Please use existing account or contact your Salesforce Administrator for assistance.'); }
     }
}

This has the feel of an easy code but being new to visualforce and apex, I can't seem to figure out how to get past this error. Hope you can help, thanks!

One can not split string on '.' character?

Following code does not work.

String strTest = 'test.test';
String[] arrTest = strTest.split('.');