Performing Locale-Independent Comparisons
Collator c = Collator.getInstance(new Locale("ru"));
//c.setStrength(Collator.PRIMARY);
System.out.println(c.compare("JOHN", "JOHN"));
System.out.println(c.compare("JOHN", "John"));
System.out.println(c.compare("JOHN", "john"));
System.out.println("JOHN".compareTo("bill"));