Something

import java.util.Comparator;
public class IntegerComparator<Person> implements Comparator {
	public int compare(Person p1, Person p2) {
		int cmp;
		if(p1.getAge()<p2.getAge()) {
			cmp = -1;
		} else if(p1.getAge()==p2.getAge()) {
			cmp = 0;
		} else if(p1.getAge()>p2.getAge()) {
			cmp = 1;
		}
		return cmp;
	}
}