Java tutorial
/** * Copyright (C) 2016 Stichting PALGA * This file is distributed under the GNU Affero General Public License * (see accompanying file <a href="{@docRoot}/LICENSE">LICENSE</a>). */ package business.controllers; import java.util.Comparator; import org.springframework.stereotype.Component; import business.representation.LabRequestRepresentation; @Component public class LabRequestComparator implements Comparator<LabRequestRepresentation> { @Override public int compare(LabRequestRepresentation arg0, LabRequestRepresentation arg1) { if (arg0 == arg1) { return 0; } if (arg0 == null) { return -1; } if (arg1 == null) { return 1; } if (arg0.getDateCreated() == arg1.getDateCreated()) { return 0; } if (arg0.getDateCreated() == null) { return -1; } if (arg1.getDateCreated() == null) { return 1; } long created0 = arg0.getDateCreated().getTime(); long created1 = arg1.getDateCreated().getTime(); if (created0 < created1) { return -1; } else if (created1 < created0) { return 1; } return 0; } }