You could always check out String.format();
EDIT:
for example
String s = "TestString";
System.out.println(s.format("%s.%s", s.substring(0, 4), s.substring(4, s.length())));
Type: Posts; User: KucerakJM
You could always check out String.format();
EDIT:
for example
String s = "TestString";
System.out.println(s.format("%s.%s", s.substring(0, 4), s.substring(4, s.length())));