Name

public class Name implements Comparable {
    private String first;
    private String last;
    
    public Name(String firstName, String lastName)
    {
        first = firstName;
        last = lastName;
    }
    
    public String getFirstName() {
        return first;
    }
    
    public String getLastName() {
        return this.last;
    }
    
    public int compareTo(Object name) {
        // -ve means: this name comes after other name
        // +ve means: this name comes before other name
        
        Name name1 = (Name) name;
        //Name name2 = new Name(first, last);
        //name1 goes before 
        if (name1.getLastName().compareTo(this.getLastName())<0) {
            //name1 comes after name2
            return -1;
        }
        else if (name1.getLastName().compareTo(this.getLastName())>0){
            //name1 comes before name2
            return 1;
        }
        else {
            if (name1.getFirstName().compareTo(this.getFirstName())<0) {
                //name1 comes after name2
                return -1;
            }
            else if (name1.getFirstName().compareTo(this.getFirstName())>0) {
                //name1 comes before name2
                return 1;
            }
            else {
                //the two names are the same
                return 0;
            }
        }
    }
    
    public String toString() {
        return first + " " + last;
    }
}
public class Driver {
    public static void main(String[] args) {
        Name name1 = new Name("Alice", "Kang");
        Name name2 = new Name("Bella", "Kang");
        
        System.out.println(name1.compareTo(name2));
    }
}