public class Main {
public static void main(String[] argv) throws Exception {
String s1 = "s1";
String s2 = "s2";
int i = s1.compareTo(s2); // 32; lowercase follows uppercase
if (i < 0) {
// s1 precedes s2
} else if (i > 0) {
// s1 follows s2
} else {
// s1 equals s2
}
}
}