import java.util.Locale; 

public class TestFinalSigma { 
    public static void main(String[] args) { 
        /* 
         * DerivedCoreProperties.txt 
         * 
         * 0041 ; Cased # Lu LATIN CAPITAL LETTER A 
         * 0042 ; Cased # Lu LATIN CAPITAL LETTER B 
         * 003A ; Case_Ignorable # Po COLON 
         */ 

        /* 
         * SpecialCasing.txt 
         * 
         * <code>; <lower>; <title>; <upper>; (<condition_list>;)? # <comment> 
         * 03A3; 03C2; 03A3; 03A3; Final_Sigma; # GREEK CAPITAL LETTER SIGMA 
         * 03A3; 03C3; 03A3; 03A3; # GREEK CAPITAL LETTER SIGMA 
         */ 

        String s = "A\u03A3:B"; 
        String lower = s.toLowerCase(Locale.ROOT); 
        String expected = "a\u03C3:b"; 

        System.out.println(lower); 
        System.out.println(expected); 
        System.out.println("Same? " + expected.equals(lower)); 
    } 
}