Wrong output using replaceall

Question

Why do i get \"AAAAAAAAA\" instead of \"1A234A567\" from following Code:

String myst = \"1.234.567\";

String test = myst.replaceAll(\".\", \"A\");

System.o         


        

Answer 1

Because every single char of the input matches the regexp pattern (.). To replace dots, use this pattern: \. (or as a Java String: "\\.").