Java tutorial
//package com.java2s; import java.util.ArrayList; import java.util.Collection; import java.util.Collections; import java.util.List; public class Main { /** * Convert a {@link Collection} of <T> to a sorted {@link List} of <T>. */ public static <T extends Comparable<T>> List<T> asSortedList(final Collection<T> collection) { final List<T> list = new ArrayList<>(collection); Collections.sort(list); return list; } }