Here you can find the source of sorted(List
public static <T> List<T> sorted(List<T> l, Comparator<T> comparator)
//package com.java2s; /*//from w w w. j a v a 2s . co m * Copyright 2010 LinkedIn, Inc * * Licensed under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. You may obtain a copy of * the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations under * the License. */ import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.List; public class Main { public static <T> List<T> sorted(List<T> l, Comparator<T> comparator) { List<T> copy = new ArrayList<T>(l); Collections.sort(copy, comparator); return copy; } public static <T extends Comparable<? super T>> List<T> sorted(List<T> l) { List<T> copy = new ArrayList<T>(l); Collections.sort(copy); return copy; } }