Java tutorial
//package com.java2s; import java.util.Collections; import java.util.List; public class Main { /** * Convenience method for sorting a list by either ascending or descending * Ascending is exactly the same as calling Collections.sort(list) * Descending is exactly the same as calling Collections.sort(list, Collections.reverseOrder()) * * @param list * @param isAscending */ public static <T extends Comparable<? super T>> void sort(List<T> list, boolean isAscending) { if (isAscending) { Collections.sort(list); } else { //is dec Collections.sort(list, Collections.reverseOrder()); } } }