Usage of "compareTo" Method.

import java.util.Scanner;
public class compareTo{
public static void main(String args[]){
Scanner i = new Scanner(System.in);
String a = i.next();
String b = i.next();
if(a.compareTo(b)==0){
System.out.println("THEY ARE EQUAL");
}
if(a.compareTo(b)>0){
System.out.println("GREATER THAN ZERO");
}
if(a.compareTo(b)<0){
System.out.println("LESS THAN ZERO");
}
if(a.compareTo(b)!=0){
System.out.println("I am not equal");
}
}
}