Unnamed

import static ch.lambdaj.Lambda.having;import static ch.lambdaj.Lambda.on;import static ch.lambdaj.collection.LambdaCollections.with;import static org.hamcrest.core.IsEqual.equalTo;import java.util.Arrays;import java.util.List;public class Derp {	public static class Person {		Person() {					}				Person(int a) {			dob.year = a;		}				DOB dob = new DOB();				public DOB getDob() {			return dob;		}		public void setDob(DOB dob) {			this.dob = dob;		}					}		public static class DOB {		private int year;		public int getYear() {			return year;		}		public void setYear(int year) {			this.year = year;		}					}		public static void main(String[] args) {		List<Person> people = Arrays.asList(new Person(1985), new Person(1988), new Person(1985));				List<Person> ppl1985 = with(people).retain(				having(on(Person.class).getDob().getYear(), equalTo(1985)));				for(Person p : ppl1985) {			System.out.println(p+" = "+p.getDob().getYear());		}				System.out.println("derp");				for(Person p : people) {			System.out.println(p+" = "+p.getDob().getYear());		}	}}